Thanks for the update. I guess I have a few comments.
A) Neither of you is ready for a relationship, and that includes with each other. Take it from me, it doesn't help things to rush in to quick
B) You might not bring it up right now, and are at this point being supportive, but should you ever be together again, the things she is saying now will bug you in your new relationship with her. And you'll question her motives for trying again. I suggest you look into a variety of books about healing after infidelity. There are some that both of you could read, should she choose to do so.
C) I'd give her some space. She isn't to the point of wanting a relationship with you. This has been going on for months and you've hung on, hoping she'll notice your efforts. She hasn't, the fog hasn't lifted, she still perseverates on the OM. I feel like you are her safety net, but that you are setting yourself up for heartache when the next guy rolls around. She might be a little more interested if you weren't so obviously available and hung up on her. Try to detach more from this.
D) In my opinion, she won't consider you an option until you are no longer obviously an option. And you don't want to be someone she takes out of desperation.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
