Some women play hard to get because they think it will make them more desirable to men. I wonder if that's what's happening here. If so, do you really want a woman plays games? Otherwise, she's either not that interested or doesn't have time for a relationship. Whichever of the three it is, I don't think it's worth putting in a ton of effort for her. I would move on and only give her as much attention as she's giving to you.
“This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.” ― Douglas Adams, The Hitchhiker's Guide to the Galaxy