I thought she was really into him. However, I wasn't on their date of course. I just can't imagine that a girl who really likes a guy would leave him promptly after.
If it's a non-starter up front, that's a good thing. It saves the guy a lot of drama and trouble down the road.
Try having a girl that really loves you (when sane) that you end up seeing arrested many times in your presence and dragged out of your place by the PD, get's prosecuted and convicted, spends time in jail and has a restraining order issued against that still won't leave you alone, keeps calling, emailing, g-chatting, and coming back even with and after all that.
I don't claim to be brilliant, but maybe she does all these things because you've already established that you will 1) take her contact, and 2) generally consider getting back together with her, so 3) she's never had to learn that her actions have consequences as far as ending your relationship goes?