I hadn't really fleshed out the relationship, tbh. So I'm loving this. It totally all works. She definitely would wonder if she made the mistake letting him go, too. She hasn't had a serious relationship since. I feel like she'd live with the whole "why didn't he come with? why didn't I stay" sort of thing. Or the whole, "why didn't I go back after I graduated?" or even stay in contact with him. I totally see her completely heartbroken about it, thus still making her stand-offish from seriously dating someone.