She slipped the L word, in there. If you weren't asking yourself, these questions, I'd have more reason for concern. You aren't entering into these feelings, it seems, without much thought. Maybe, she's guarding her feelings, due to distance. It wasn't the response you wanted, but, it's not a hopeless, response, either. Could be her, life perspective. Who knows?

I'm sure, you are aware, like we all must be aware, at this point in life, of the 'fantasy effect', and until that initial meeting occurs, a little guardedness with emotions, is a good thing. Here, on PC, those of us, reading your posts and those reading your PM's, are hearing about your emotions, but it's better us, than her(as in too much, too soon type of sharing, kwim?)

I think, it's a positive, that you shared, how you felt, with her. Good for you, or as they say in the UK, good on you. (many hours spent on UK mummies boards, when the boys were a little younger, I was invited, by a mum on an American board )