Here's what happened: So one morning a few days ago, I (14m)go downstairs to make some pa I'mIncake and sausage on a stick things. About halfway through, my sister (12f) comes down and starts making them too. Now I had assumed they were just for me, as they had been before in the past, so I politely told my sister, "Hey, I'm pretty sure those are just for me." She responded with a "No their not!" with her usual attitude, and I apologize. Then I hear her mutter under her breath,"You need to stop that." When I ask her what I needed to stop, she said this:"You need to stop assuming everything is yours." So I say, "I need to stop assuming that things that were previously just for me are still just for me?" I had said that semi-jokingly, so I was NOT expecting her to say "Yes." But here's the thing: she does the EXACT SAME THING with Nutella.When I confronted her about this, she started denying everything, even though every time I try to get some Nutella, she gets absolutely pissed at me. So, what do I do? I'm too young to move out, and I'm homeschooled, so I'm constantly stuck with the same five people, with almost no escape.