Need help figuring out this shy girl?

[Jake]

Iv been hanging out with this girl, she seems very shy or just quit I'm not sure. Usally I have to start the converation and I get a lot of one word answrers. I'm pretty sure she likes me cause she giggles when i say somthin dumb and a bad joke. And she always has hands in her lap or pockets and she doesn't move when she sitting down. When we talk she doesn't hold eye contact very long, and when I look at her she will look then way then back and smile then look away again. Iv only hung out with her a few times so what should I say or do to make her fell more comfortable around me? And olso when I asked her if she wanted to go see another movie somtime she said ya I guess and was looking at the ground trying to cover her smile I'm guessing that good??? When I text her its hard to keep a conversation going. What do I need to do to show her I care about her lots??