I am sorry that your mother doesn't know HOW to be THERE for you. Why do you keep asking her for something she doesn't know how to do, never did and probably never will? Sorry to learn your mother is with an abusive partner, sounds like she doesn't feel she is worthy enough to have a partner that can treat her nicely.

It sounds like you have a lot of anger because you wanted her to mother you and she failed you that way and you ended up having her depend on YOU which you don't want.