Please my 'to be' step mum has it in for me?

Go to your sister & talk to her. Then your dad & ask him to talk to your step mom, parents seem to just like the newness the step parents brings so they become blind. If your dad does you need to go straight to your stepmom. She's being childish. It's nit about her, she's coming into YOUR area. Sometimes I wonder why parents no linger care about their childrens opinions when it comes to their spouse. I know it's hard, I've had terrors from an old step dad. You need to be strong. You also need to come out about cutting. I use to cut & burn since age 11. I'm 18 now & finally able to get the professional help I need. You need to also.