It's mine don't touch it

I wish that people wouldn't touch my stuff. I can't have anything in my house without it going missing or getting ruined. I love that my mom does foster care I think it's great and I'm proud of her but, the kids ruin everything. The babies  that she takes in get nausous when they smell a clean shirt. Everytime I put one on the throw up on it or pee through their diaper all over my clothes. Then my older sister must think that my clothes fit her better than her own do because she's always taking them without even asking. Then I don't even see them again for a couple of months and when she gives them back they're covered in stains. I just don't understand why I can't have one nice thing to myself...