Girls: Real help needed with this girl who is confusing the hell out of me!?

So, there's this girl at university. I've known her for about a couple of months. We started off as friends and then talked and talked and discovered we have so much in common and we connect on a completely different level. She broke up with her boyfriend two weeks ago and for the past four days, we've been like constantly talking to each other. We sit together in class, once class is over, it's almost non-stop texting, we study together at night so yeah we're really getting to know each other. And it's from her side as well, there is a bit of mild flirting and stuff as well.

The thing is, she's a psychologist. And last night, we were having a few drinks and she says 'I know you've been thinking about something lately. Why don't you just tell me what it is?" I refused because I'm pretty sure but still not 100% sure about what she wants me to tell her. She proceeded to ask me that question about ten times through the night and I said 'You know what I've been thinking, don't you?' and she replies with 'No, I don't.' Why is she acting like this and what's going on?