Now that she is back, living close to family, I wonder if this is still an issue for her.

She will have to decide who she wants. If I were you, though, I would not be thinking of marrying her anytime soon. Even if she chooses you, she seems lacking in maturity when it comes to relationships.

I was interested that you said that you are doing so much better thanks to being with her. I wonder if she doesn't feel quite so needed with you anymore. I wonder if she needs to feel needed, and the other guy's emotional blackmail is playing into that need.