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My Husband and His Sister Decided I Should Babysit Her Kids for Free While They Went on Vacation

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When Mandy asked me to watch her kids for a few hours, I didn’t think twice. It seemed like a simple favor. But those few hours turned into the most shocking phone call I could have imagined. Suddenly, my husband, Ryan, and his sister, Mandy, were boarding a flight to Mexico, and I was left alone with two kids. No warning. No discussion. Just me, two kids, and a week-long betrayal that I never agreed to.

It all started with a text around midday. I was sitting at my desk, checking some data on a spreadsheet when my phone buzzed. I looked at the screen and saw Mandy’s sister’s name pop up. Her message immediately made me pause and stop what I was doing.

“Hey! Emergency. Can you grab the kids from school today? Just until I finish something. Thank you!!”

Emergency? My heart skipped a beat. Was something wrong? Was one of the kids sick? Had something happened to her?

I quickly typed a reply, trying not to panic. “Of course! Everything okay?”

Her response came almost instantly. “Yeah, just swamped. You’re a lifesaver!”

I breathed a sigh of relief. It wasn’t anything major. She was just busy.

Mandy’s two kids — Ellie, six, and Jake, three, were sweet, though a handful. I worked from home, and my afternoon was light. I figured picking them up, feeding them snacks, and hanging out for a few hours before Mandy picked them up after dinner wouldn’t be a big deal. In fact, I thought it might even be fun.

I settled the kids on the sofa with a cute Ghibli movie and some snacks while I finished up my work for the day. For the first few hours, things went smoothly. But by 7 p.m., the fun started to fade.

Ellie was on the floor, coloring intensely. I glanced over at her, noticing how deeply she was focused. It was almost like she was trying to erase something from her mind with each stroke of her crayon. But Jake, well, Jake was in the middle of a full-blown meltdown. His tiny fists were pounding against the floor, his cheeks were streaked with tears, and he was crying at the top of his lungs.

“I WANT THE BLUE CRAYON!” he screamed, his face contorted in rage.

The thing was, there was no blue crayon. He had snapped it in half earlier when he was coloring.

I sighed, rubbing my temples. “Jake, buddy, it’s just a crayon. We have other colors. Look, you can use the red one.”

“NOOOOO!” Jake shrieked, throwing himself onto the carpet like a tragic character from an old play. “I want the blue one!”

Ellie, still not looking up from her drawing, muttered under her breath, “Just give him the broken one. He doesn’t care.”

I shot her a look. “That’s not how tantrums work, Ellie.”

Meanwhile, Mandy? Radio silence. No texts. No calls. Nothing.

I tried to stay calm, figuring maybe Mandy had gotten caught up in whatever “emergency” she had mentioned earlier. She could’ve lost track of time, or maybe her phone had died. But as the minutes ticked by, I started to get uneasy.

By 8 p.m., my patience was wearing thin. I paced the kitchen, my phone clutched in my hand, staring at the screen as I waited for some sign of life from Mandy.

I sent another message: “Hey! Just checking in. The kids are getting sleepy.”

Thirty minutes later, still nothing. I sent another: “Hey, you coming soon?”

Nothing.

That’s when I finally called Ryan.

He picked up on the third ring. Before I could even say hello, I heard the unmistakable sounds of airport announcements in the background.

“Ryan, why are you at the airport?” I asked, already feeling the tension rise in my chest. “Never mind, you can tell me later. Have you heard from Mandy? She asked me to pick up the kids earlier, and now she isn’t answering my texts.”

“Oh, hey,” Ryan said casually, as if he were just grabbing some milk from the store. “Yeah, about that… Mandy is with me. We’re just about to board our flight.”

“Excuse me? Your flight?” I replied, feeling my heart drop.

“Yeah, we’re headed to Mexico! You know Mandy really needed a break. We’ll be back in a week. Thanks for watching the kids! You’re amazing. Love you!”

And just like that, he hung up.

I stood there, my phone still pressed to my ear, my mouth hanging open in disbelief.

A week. Not a few hours. A whole week! They didn’t even ask me. They didn’t even tell me! If I hadn’t called, when would they have bothered to tell me? Would they have sent me a postcard from Cancun? Or maybe tagged me in a photo from a hotel in Cozumel?

I dropped into a chair, the weight of their audacity crashing down on me. They had booked their trip, packed their bags, and left the country without saying a word.

Ellie glanced up from her drawing, her eyes wide. “Where’s Mommy?”

“She’s… gone away for a few days with Uncle Ryan,” I muttered, trying to keep my voice steady. “You two will be staying with me until she comes home.”

Ellie scrunched her face in confusion. “But she didn’t say good-bye…”

Jake sniffed, his lip quivering. “I want Mommy. I want to go home!”

And then, as if on cue, Jake burst into the most heartbreaking, furious sobs I’d ever heard.

I sighed, picking him up, but quickly set him down when he flailed at me with his little fists.

Ellie started crying too. For a while, all three of us sat in the living room, feeling sorry for ourselves, the air thick with the sadness and frustration we all felt.

The next few days were a blur of chaos.

Ellie and Jake were good kids, but they were still kids. And this whole situation threw them off balance as much as it did me. Full-time, no-warning, unpaid childcare while juggling my own job? Not exactly a dream gig.

Mornings were the worst. Getting Ellie and Jake out the door for school was like trying to herd hyperactive squirrels. Jake fought me every single morning when I buckled him into his car seat, twisting and kicking, screaming like I was strapping him into a medieval torture device.

Ellie, on the other hand, insisted on wearing her glitter-covered princess dress to school. When I told her no, a meltdown ensued that I swear could’ve earned her an Oscar nomination.

At home, the noise never stopped. There were sibling fights over who got the blue cup. Screaming matches over who touched whose toy. At one point, I walked in on Jake trying to flush Ellie’s Barbie doll down the toilet while she stood in the hallway, screaming, “YOU’RE A VILLAIN!”

The messes were endless. Cereal was dumped onto the floor like it was confetti. Sticky handprints were everywhere. A couch cushion mysteriously disappeared.

The laundry? It piled up like a mountain. It spilled out of baskets and taunted me every time I walked past it.

Meanwhile, Ryan and Mandy were living their best lives and showing it off on Instagram.

Their posts were a never-ending highlight reel of luxury. Mandy, lounging by a pool with a drink in hand. Ryan, grinning with a plate of gourmet food in front of him. Stylish photos of margaritas, beach selfies, and spa days filled my feed, mocking me every time I opened the app.

And the captions? They were like salt in an open wound.

“Finally relaxing! ☀️🍹”

“Much-needed escape! 😍🌴”

“Zero stress!!!”

Zero stress… That must be nice.

Each new post made my resentment grow. By day two, I snapped.

It was lunchtime, and I was barely hanging on by a thread. Jake was in his high chair, screaming at the top of his lungs and throwing mac and cheese across the room like a tiny, enraged catapult. Ellie was at the table, yelling right back at him, her face scrunched in anger.

“STOP THROWING FOOD!” I yelled, my voice cracking.

Jake responded by grabbing a fistful of macaroni and hurling it straight at me.

I looked down at myself, cheese sauce splattered across my sweater, noodles stuck to me like bad art.

The kitchen looked like a disaster zone. Plates were knocked over. Spilled juice pooled on the counter. Crumbs covered the floor.

And in that moment, something inside me broke.

I stood there, sticky and exhausted, my ears ringing from the noise, and thought: I can’t do this anymore.

Then, a thought crossed my mind. A petty, beautiful thought.

I picked up my phone and hit record.

On day four, Ryan and Mandy FaceTimed me from the beach, and they were furious.

“WHAT DID YOU DO?!” Ryan yelled. “TAKE IT DOWN! RIGHT NOW!”

Mandy, nearly crying, added, “Seriously! Everyone’s commenting on our posts! People are calling me a bad mom! Fix it! Delete it NOW!”

I took a deep breath and smiled.

After the mac and cheese incident, I had recorded every disastrous minute of my impromptu babysitting. I edited it into a montage, mixing it with Ryan and Mandy’s vacation videos. Then, I posted it to my private Instagram with the caption: “When your husband and his sister leave the country and forget to mention you’re now her free nanny. Worst surprise ever.”

The response was explosive.

Comments poured in:

“Wait… they left YOU with the kids? For a week? Without asking??”

“Why didn’t they hire a sitter?”

“Why are they vacationing without you?”

Now, Ryan and Mandy were getting roasted on their own posts by family and friends who’d seen the video.

“Oh, you mean the video?” I said to Ryan when he called. “No problem. I’ll take it down right after you book a flight home to relieve me. Otherwise, I’m just getting started.”

They stammered, sputtered, and hung up. There was no way they could ignore it now. They had no choice but to come home early.

When they arrived, I handed Mandy her kids, packed my things, and moved out to stay with a friend.

Ryan tried to backtrack. “Come on, babe. It was just a misunderstanding!”

I gave him a look that could’ve frozen lava. “No. A misunderstanding is forgetting to grab milk. This? This was a betrayal.”

The video? Still up. The comments? Still rolling.

And me? I was sleeping better than I had in years, with zero surprise babysitting shifts in sight.