No matter how dark it gets, don't give up. My husband said some really really crappy things to me when he was talking about divorce and getting on with his life without me. It was amazingly painful. I thought it was over too and started to really make plans for a life without him.
However, now we are kissing good bye and he's calling to check in on us and texting.
I think back to the times I was the dumper in my relationships. I think back to when I was the dumpee. I know that when I was ready to end relationships I wasn't mad, I was truly sad for the end and didn't want to hurt the guy. I knew it was over because I could imagine him with another woman and really wanted him to be happy. Hurting him more was NOT on the agenda......except for once. I had an ex boyfriend who I found out cheated on me with his ex. When I found out I dumped him in the most mean hurtful manner I could think of and continued to antagonize him. And truth be told, I didn't want to dump him but he cheated on me, so since I couldn't stay with him and keep my pride, I made him pay when I broke up with him.
Basically, my point is this: If you really want to get away from someone, and you really just want to be with out them, hurting them is not part of your plan. You want the process to be as painless as possible. The fact she is trying to hurt you makes me think that maybe, she doesn't really know what she wants but she is super pissed off at you.