I (27F) work full time and live alone. My sister (31F) just had her first baby about two months ago. I’m super happy for her, and I’ve visited a few times, brought gifts, and even helped out when she needed to run errands or take a nap.

But recently, she asked me if I could start babysitting her newborn every Saturday for free so she and her husband can have a “weekly break.” I asked how long she meant by “babysit,” and she said 6–8 hours each time. That’s literally a full shift.

I told her I’m happy to help occasionally, but I can’t commit to something every weekend, especially not for free. I work all week, and my weekends are my only downtime. If I’m giving up an entire day to watch a newborn—feeding, changing, calming them—I feel like it’s fair to ask for at least some compensation or make it occasional instead of a standing commitment.

She got super offended and said, “Wow, I thought family helped each other,” and accused me of being selfish and only caring about money. My mom is now guilt-tripping me and says, “When you have kids, you’ll understand.”

But I feel like this isn’t about being selfish—it’s about boundaries. Watching a newborn isn’t light work. It’s not like I’m saying no forever, I just don’t want to be their free nanny every single weekend.

So… AITA for refusing to babysit my sister’s newborn every Saturday for free?