How interested is she?

Situations like this I think really can depend on not only the girls age, but her level of maturity in addition.

In my early early twenties - I would never initiate contact in fear of coming across as desperate or too needy.

On the other hand - LOL In my late twenties - The phone and email works both ways. It takes two to build a relationship and its rather pointless if one person is always doing the initiating and it can be stressful in events such as yours as there really is no clear defined yes or no answer as to if she is interested or not - and if so, to what extent?

Because you mentioned the two of you have had good conversations - and I'm going to assume that your conversations have some depth to them and aren't strictly shallow and sexual - then you could almost rule out the possibility of her feeling used as again - it takes two, and its quite easy to say no and walk away.

Your best bet would be to simply ask her how she feels about things. I wouldn't come out and be blunt and "Do you think I'm using you or what" LOL But perhaps just tell her "Hey, I've really enjoyed the time we've spent together, I'm just wondering if the feeling is mutual? " (or something to that effect).

That way you'll get an answer to your question, and she will be left feeling as though you respect her because you didn't beat around the bush nor did you ask her in a rude manner.

Good Luck to ya ;o)

Well, there are a number of issues here. First of all, make sure she doesn't feel used. If you've been fooling around a lot she might feel like a piece of meat to you and so she wants you to come after her to make her feel like you want more than fooling around. Or maybe she thinks its the guys job to make plans and call her. I'm kinda like that. Or finally she could be interested in you as a piece of meat. I hate to say that, but it's possible. The best thing to do is just to talk to her about what's on your mind. Most girls appreciate a guy who is honest and open. Try it.