I think I'm in a mentally abusive home.

My parent fight every night and my mom yells at me a lot. It's not physical and has never been, but my "parents" call me names like spoiled, brat, two year old, crybaby, and childish. I'm only 12 and my dad passed away last year. My mom expects me to call my lawyers myself when I have anxiety and ask them if they'll help me out with the money my bio dad left me. Me and my dad were very very close and I loved him a lot. She calls him a dead beet and yells at me for not kicking my step mom out of his house and not wanting to get his cars or house when they're mine now and not her decision to make. I don't understand why she expects me to handle this all by myself when she, an adult, can't even handle it. She always says that I'm whiny to everyone and blames everything on me.