dang man! sounds like she just might be a cock-a-tease..

what set of my alarm was that part about her asking you if you like her, then flirting with you, and then flirting wih your friend..

to me it looks like she loves the attention of you wanting her, maybe she thrives on the look of your jealous eyes as she hugs your friends in front of you

some girls are like that... sad but true

but on the other hand, maybe she just really likes you and just wanted to test you in order to get confirmation that there, in fact, are mutual feelings?

now that could also be the case..

now let me ask you this.. is she a looker?, like really really hot?
easy going and talkative?(attention whore that got you right where she wants: lost and confused. if she was interested you would know by now)

or more the shy, silent type? (then you need to go fetch, you just might have hit the jackpot)

these are dead giveaways... it could be anything in between so really, if you want to find out for sure, you need to serve it to her straight up

Good Luck