Make her laugh :D
If you met a hot girl and you started to talk to her , but you found out she is shy and withdrawn, how will you get her to talk?
Get to know her more
Flirt, Make her laugh, Ask her what she likes and make her happy:) hope this was helpful:)
Make her feel comfortable and not feel out of place and she is in the correct spot
Keep talking get her to talk about what she likes and make her happy no matter what XD
I used to be that way! Ask her if she wants to go hang out or something! Start making jokes about how shy she is and i gurantee you she will start talkign...lol