I didn't mean getting her drunk and jumping into bed 
! just talking candidly.
The thing with kissing, polly, is that this can be a provider of a mild thrill bu nothing more. In my 20s I had thought of kissing two girls (not in the same time, ha), i did thrude)at - lingring loos, looking at their lips imagining I'd enjoy it. I would have done it they wre willing and not in a public place, but I'd much rather just imagine, it was just a little thrilling, I never pursued it or tried to see then alone etc. It's because I knew for sure I didn't want anything else (one was bi or even gay, so thre was that chance), as I didn't want anythiong bar a kiss, didn't want getting naked withem then whatsoever. This could explain the vibes, especially if she did dabble before. But if you wrote to her she'd probably explain.
I'm sure she wouldn't ignore your email - it's too significant to just ignore (v.rude) and she's direct enough to just tell you what she feels if it's negative, I really think she's not going to be diplomatic or too careful but will be polite. Will probably repeatr she is not gay but possibly will mention that she might fantasise a little on kissing front, or something like that. Or she would confess is she has become curious. So go for it.