Well she might freak out a bit, but that could be in a good way so you get back together :-)

I suspect she either is still getting over what happened last time (as previous posters have suggested) or isn't interested in a relationship but doesn't feel able to say. Or she simply may not be clear on how you feel since although it's clear to you, it may not be clear to her.

The longer you keep this situation going the more upset you'll get, the more you'll be likely to misinterpret things, and the more difficult it will be for her to work out what's going on.

Basically she told you that before she didn't feel that you paid enough attention, so dithering about now may well reinforce that idea.

It's scary to be this assertive since there's the risk of rejection - and who wants that. But even in a worst case scenario you at least know where you stand, you can avoid making a fool of yourself, and you have the chance to move on.