Well, a tupper/host relationship is pretty unique. And you don't always really start anywhere, you do need to actually build that relationship for it to really become something. Which includes hanging out and talking and learning to really know each other.
Is it you, is it her, doesn't really matter. You have chosen to listen, so might as well keep listening until you think you should be making a decision. No need to hurry there, just talk. If you're anything like me, at some point you just gotta start accepting that maybe it's not me because everything they say is weird and I didn't think they'd ever say something like that.
So just chill your balls and talk about something. See if you can find something she likes, maybe see if she wants to fill out surveys or tests or something for shits and giggles. You know that the whole talking thing ain't gonna get better unless you talk, right?