I think you said she's 38, right? Do you think she's looking to settle down and start a family quickly and that's why she seemed to be moving too fast? In any case, did you ask her why she made that decision? Are there other women you've been dating as well that you might keep seeing?
I can kind of imagine that it's hard to find a connection like that. Perhaps however she'll re-emerge after a while when you're divorced to try again. You never know. If there was a special connection it's too bad she had to let it go so soon!