the very fact that you posted that msg means that you feel there's something going on, and 99% of the time, if you're feeling it, it's happening.
so yeah, i reckon she likes you. and maybe smiling and winking is all she's confident enough to do, or maybe she wants you to make a move like dancing with her, or maybe she just doesn't want a cheap pull in a club, so doesn't want to dance with you for that reason. there are a whole host of unknowns.
my advice, ask her out
do it. you've got nothing to lose.
worse care scenario: if she says no and people find out you liked her, it's not humiliating. it's just other people jealous that you had the opportunity to ask someone out. just be an adult and say, "yes, i did like her"