I'm a grad student and I met a girl playing soccer. Strong eye contact, which was very nice. Got her number, and in texts she says "haha" and "lol" without being prompted to in any way.

However, I haven't seen her smile (much less "lol") in person. She has never said my name, not even in texts. To me, this is a little bit off. I do plan to escalate as much as I can with touching, but meanwhile, what could this mean? Any similar experiences?