I think you should ask again. My guess is if she's as gorgeous as you say she is, she's accustomed to being asked out. And if she really weren't interested, she'd have told you straight out "No, I'm just not into dating at all right now" or "No thanks" instead of telling you she was fresh out of a relationship and needed some time. Maybe just make it clear that getting together would be a "friends" thing to sort of relieve any romantic pressure at first. Then lay on the charm. And stop putting yourself down!!