What do I do about my pyscho mum?

Didn’t put much information on so here’s a load more haha… My mum and I have never gotten on, I believe it’s due to the fact that she is extremely strange, totally self absorbed, hyporitical, doesnt have a speck of maternal feelings and many more…She has kicked off at me for the most unusual and irrelivant things…Kicked me out of my home about 3 or 4 times and I’ve had to find somwhere to stay…I lived with one of my best friends and her family, they fostered me for 4 months but they treated me like/made me feel like bloody Cinderella so I left…My other best friend and her (wonderful) grandmother took me in…All was well until my friend suddenly became aware that she was not like everyone else..(No one ever told her she had autism and other ‘disabilities’) so I had to leave because she became kind of pyschotic and scared the crap out of me and made me feel constantly on edge. Social services were involved but now coudln’t care less…I want to know how to communicate with my ‘mum’…I along with many others think she may be slightly autistic…It is very hard to get through to her and she has suddenly decided to try and become ‘SUPER-MUM’ (by being overly controlling and trying to take my money/cigs/alcohol away from me…she never cared before..so why now? Because social services are watching her closely thats why!) since I had to leave my last foster family and move back in with her and my autistic brother…She has failed miserably!! I want stabillity and respect…two things that she just does not understand. She is vicious and violant and TOTALY manipulative. She continues to bring up my ex boyfriend who broke up with me like 8 months ago? And tries to put me down and place the blame on me…Basicaly she constantly puts me down and bilittles me (CANT SPELL) and literaly screams in my face. She gets physical..I admit I have a part in that, but seriously…It is the only way to make her back down and lay off me… (Just realised…WHY ARE MOST PEOPLE I KNOW AUTISTIC OR CLOSELY RELATED TO AN AUTISTIC BEING? LOL) I have tried talking to her…we tried family counselling twice but she wouldnt let anyone get a word in edge ways and constantly bad mouthed me. What more can I do? I’ve tried being nice, I did everything she told me when she told me, I didnt back chat and yet she still treated me like something on the bottom of her shoe…I swear she needs mental help! I dont even know what my actual question is…There is so much more to it then this…But im sure no one can be bothered reading this as it is…I just could really do with any advice seriously ANY would be greatly appreciated…Im struggling with every other aspect of my life and she is just topping it all off and driving me insane…Kind of literally… My dad is not around so I can’t go to him for help. Does anyone think there is any getting through to her or should I just try get another place to live? Bare in mind im only 15 and it would have to be a hostel or something equally bad. I cant cope with the way she is any more!! HELP!! Please LOL.