My Sister Has Changed My mom has gone to rehab almost a couple months ago. I already lived with grandma, so my mom didn't have to worry about finding someone to watch me (she's single). But she couldn't find someone to watch my sister, so she asked her ex's mom if my sister could stay at their house. Let's say that wasn't a smart idea. My mom's ex abused me and my sister when I was a toddler and she a baby. His mom didn't find anything wrong with his disciplining. A couple days ago, my sister called me and I didn't pick up. So yesterday I called her back. The conversation started fine, then she started saying a bunch of mean crap about our grandma. I could tell my mom's ex's mom was saying a bunch of crap to my sister about my grandma because my grandma was the one who turned my mom's ex in and so his mom hates my grandma. Not only has my sister been rude on the phone, but when my mom calls her to check up on her, all she says is things she wants when my mom gets back. And I told my sister that it's gonna take awhile for mom to get better and she doesn't need a lot of stress. I said this when my sister said she wanted me back home when mom gets out of rehab (I have lived with my grandma for awhile). Then when my mom calls my sister she says that I've been saying bad things about my mom. I got all this stress yesterday and I wanted to slap my sister. She said really hurtful things. And it's all because of that woman she's staying with. I have never felt so mad, upset, and disgusted in my life. Can someone give me advice on what I should do?