I’m 23(F) and live at home with my parents. I pay rent here, so it’s not just me crashing at theirs, it’s my home too. My parents are going away for just over a week, and I was really looking forward to finally having the house to myself. My sister has two kids, one is 3 and autistic/non-verbal. She lives in a hostel right now, so she and the kids stay at our parents’ house a lot, usually a few days every week. When they’re here, it’s loud, messy, and stressful. I get so overwhelmed I just end up resenting them. When my parents told me she would be staying the whole week while they’re away, I said I was hoping for some quiet. My mum told me she’d get me a lock for my bedroom door so I could have space, but that just means I’m locked away in my own room while my sister takes over. She’s always been very messy, leaving washing, toys, dishes for days. I’m actively looking to move out, but the only places I can afford are 5 hours away, which makes it really hard. So I’m stuck here for now, and it feels like I can’t even ask for a week of peace without being seen as selfish. AITA for being upset that I’m losing the one week I thought I’d have the house to myself?