Quote: She tells me that me being nice to her and/or doing things for her are doing nothing but pissing her off and actually driving her away
That's HER FEAR talking...her fear that it's just more of the same...empty promises...and short lived changes.
Keep doing the right thing NO MATTER what negative things she says and don't ask in ANY way for acknowledgement that you've done them...don't point out to her that you're doing these good things...JUST KEEP DOING THEM.
You didn't turn her against you over night...and you're not going to regain her TRUST back overnight either. Stop the chattter...stop ASKING...that's control...and she's NOT about that right now.
Keep up the good work and BE PATIENT it's a long road back. T2