[Porcelain]

I need some advice in terms of how to handle an issue at home. Since February, my dad's been dating this chick (I call her chick because she barely has 4 years on me) who has 2 kids (7 and 8). Her 2 kids are ANNOYING AS FUCK! And they're here for sleepovers EVERY FUCKING WEEKEND! Her son is relatively bearable, it's her daughter that really pisses me off. My dad's chick takes it easy on her daughter because she was born with a slight physical deformation. I'm sympathetic toward that but I don't feel like you should let your kid grow up to be a little, undesciplined asshole because of it. At first, she'd trash my daughter's room and then wouldn't help clean up. I told my dad, very nicely, that if she plays with my daughter's toys, she's gotta help clean up. The following weekend, I was pleasantly surprised when I came in to a clean room...until I opened the closet. No, let me re-phrase that...until I TRIED to open the closet and found that it was damn near impossible cuz of the toys crammed in there. I had to have a serious talk with that kid myself and explain to her where every single toy goes and still I have to re-clean 30% of the room after she leaves.

Whatever, that's just the warm-up to my whole problem. The thing that really grinds my gears is when that kid waltzes into my room without knocking, or worse, when I'm not there. I told her, myself, a number of times not to come into my room when I'm not home. There's plenty of places for her to play that are outside of my toy-free bedroom. Clearly that went over her head. Yesterday, I come home and it's apparent she's been in there again. For one, half of my paintings are hanging crooked...a symptom I noticed reoccuring every weekend after their visit. Above my guitars, I hung a really big and relatively heavy cork board. That thing wasn't hung very well and has the potential to fall. I come home and she's hung her fucking chicken scratch on it...and the board itself is hanging sideways on snot. It may be my fault for hanging something badly and on top of thousands of dollars worth of equipment, but it's my fucking room and I should be able to do what I want in there. She stretched one of the strings the board is hung on, so I had to spend half an hour fixing it. She could have not only dropped that board on her own stupid head but she could have damaged a lot of my music gear that I need and can't afford to replace right now.

I brought this to my dad's attention and mentioned that I already made it clear to her that she's not allowed in my room. My dad is telling me to go tell his chick about it but I think he should do it. I don't want to start beef with his girlfriend if she refuses to look after her kids when they're here. She's his guest and it should be his job to make it clear to her that I'm uncomfortable with her kids strutting around my part of the house like they own the place. Mostly, I don't want to do it cuz I don't think I could do it nicely. I'm at my breaking point and I don't want to say anything rude...which I probably will. Should my dad talk to his girlfriend or should I just flat out go in there and tell her how it is?