Do you think she actually likes me or that shes just trying to sell her drinks?

haha why dont u just ask her out if you don''t have the courage go there and talk to her ask her about anything :) but dont try to embarrasse her in front of your friends by asking for a kiss cause this question wont simply get you anywhere she'll laugh and move on u know? try to open a conversation and if you r a really good looking person there is nothing to be nervous about