Most Helpful Girl
I don't think that means uninterested by any means. If you asked a question and she hasn't responded, then something seems odd about that. But if you were just having a conversation and she stopped responding, she may have just not known what to respond or thought the conversation was at a lull and didn't know how to end it. I always did that to the guy I dated, even though i was 100% interesting, the conversation literally got boring and I didn't want him to think I was dragging it on. So I just stopped responding because I feel awkward "ending" conversations with a goodbye/whatever. If you don't hear by tomorrow, text her and ask her how she is.
Most Helpful Guy
I get you. I'd feel she wasn't very interested if I was always starting it. But some people are just like that.
Ask her again, and this time learn to play the same game. Leave on a high note. When you're convinced she absolutely wants more of you. Don't think you have to play any silly games all the time, but getting her to contact you first at least once won't hurt.