I play the same game you're speaking of, I met an awesome guy and we've talked every single day, pretty much all day for the past 4 years. We plan to meet sometime this year. I understand your feelings, and I think the best thing to do is to be straight with her and tell her what you're feeling. If she isn't clear of her intentions, it may be that she is unsure herself.
Even though it was hard for me to do, I have told the guy I met how I felt and he was also unclear about his intentions. However, I brought up the situation a few more times, and we were both glad we talked it over, he told me he is as confused about his feelings as much as I am. But do you know the one thing we both realized? Our friendship was much stronger than anything that could possibly happen, even if it means one or both of us find someone else. We will always be best friends.
Sorry about that whole personal story but I felt it was needed. What I'm trying to say is that it seems like she has found someone else that she likes and as much as that might hurt, she still likes you and wants to be friends. I know the feeling all too well, but I believe the best way to find out what is going on and to stop any feelings of worry or doubt you have is to be honest and ask her about it. If your friendship is strong enough, you won't lose her as a friend. She may just be confused and that's why she doesn't know how to answer you.
Good Luck!
I'm still trying to work that type of situation out myself, hope you keep us updated!