Am I being abused? ( I'm transgender ftm )

I'm 15 years old, I came out to my mom about two years ago as female to male transgender, and she basically became an entirely different person to me. There have been multiple occasions ( probably over 50 ) where I've tried to sit her down and have a talk with her about how I really feel. She's siding with God, telling me He doesn't make mistakes, but I've never even seen her pick up a bible, and she probably goes to church about once every two years. We would fight and bicker about it for days. She'd tell me the name I picked isn't my name, that its stupid, that I'm not a boy. She also says she that I don't care about her feelings and that I "rub it in her face". I feel like a mother should love her child, no matter what the circumstance, but I just don't feel that with her anymore. She has let her friend call the police and lie to them stating that I was suicidal just because my mom thought they'd take me to a mental hospital and "fix" me. I had recently talked to her about hormone therapy since I'll be graduating high school in only a couple years, and she completely shut me out, telling me that me asking her to take me to get hormones is like someone asking her to take them to get an abortion. I understand that people like me have it much worse, but this is really starting to take a toll on me, not feeling loved and accepted in my own home. She expects nothing but A's and B's in school because that's how she did when she was in school. If I don't please her, I get my phone turned off, made to feel like an idiot, and grounded until like 3 months after my grades are higher than B's again. This is all so overwhelming, and to make matters worse, no one I talk to about it will help me because she makes it seem as if nothing is wrong to the outside world. I need help, I don't know what to do. If I am being abused, should I contact CPS? Will be thankful for any answers