Perhaps a way forward is moving beyond trying to second guess her, and just be straight with her about how you feel.

It is difficult to 'read' anything when you still like someone as things they say can be easily misunderstood.

You also can't expect her to be a mindreader. Asking her if she's ever got back with an ex, for example. It's too vague to get the answer you want and allows her to avoid a potentially awkward discussion that she may not want to have.

She may have met with you for all manner of reasons - for wanting to get back with you, to wanting to be a friend, to showing you what you've let go, or perhaps wanting some closure.

Rather than overanalysing things she may have done or said I would just be very straightforward - with yourself and her.

If you want to get back with her, then tell her that's how you feel. She'll either say she wants this too, or that she wants to think it over, or she'll tell you it's not going to happen. That way you know where you stand.

It's much easier to spend time not being assertive or tackling situations head on, and in such cases it then becomes easy to blame the other person for giving mixed signals, when in fact it's the case that you've not told them what you really want.

Call her and say you enjoyed seeing her, you've listened to what she thought went wrong and you want to make a go of it again.

You've nothing to lose by doing that. Good luck!