What should I do about my mom controlling me!!?

ur friend and ur mum both love u and thats y u need to do justice to both the relations. the best option here is make ur mum sit with u. make sure ur friend or anyone else is not around. talk to her and say that what will she get if she turns an innocent girl out of the house who has nowhere to go. what if someday something really bad happens to ur friend after ur mum sends her way. make her understand that her rash decision would end in ruining some girl's life who was not involved at all then y is she being punished. ask her that will she ever b able to look at her ownself after punishing some girl who had already struck bad luck in the form of her mother's death. just talk to her that she would not get anything after blackmailing u. say that u can only improve when the pressure of a constant tension of ur friend being driven out of ur house will b realsed. try not to argue with her but have a talk so that the main topic of discuusion does not get sacrificed to ur anger and arguement. try it. all the best