Her situation seems complicated, with a child and that husband of hers. It's often hard to leave a marriage and there's backtracking because when there's a child it's almost like that marriage is still a bit of a safety net in a way, there's lots of second guessing.

So I wouldn't take it extremely personal, you've definitely done nothing wrong since you didn't go purposefully looking for love and wanted to wait to have a proper, fair relationship with her. This is all on her and honestly, although it's probably hard, she should just seek to have an honest conversation with you, to just tell you that she's not going to do anything, for whatever reason. It's not fair to just ignore it, a bit cowardly, and keeps you in limbo emotionally too.

As someone else said, you do sound like a great guy, I could only hope for someone decent and warm like that, so you deserve a good relationship with someone who doesn't do this sort of thing.

It's unfortunate you have to suffer through this, it's definitely a let down and it's hard to still love someone you can't be with, maybe more so when you thought there was a good chance you'd be together. Maybe if you do your best not to have any obvious reaction to her and the things she does, she might try talking in the end or at least stop what she's doing now. Or just straight up tell her what she's doing is not fair.