okay sean here is what you do. dayv is right, act busy, look like it didn't matter that she said 'maybe'. now 'maybe' could mean a lot of things. when i say 'maybe' it's code for "hmm i'm semi-interested but if you don't give me some kind of fun chase with a prize at the end you're going to lose my interest cuz i'm a competitive horny bitch who wants to work for some ass, not get it on a silver plate".

yes it's a long and complicated thought process, but it's the truth. so back off for a few days. in fact, try and flirt IN front of her with another girl. not like full out feeling up or anything, but some mild flirting.
it sounds bad, but doing that will make her jealous if she has any feelings whatsoever and you'll get your answer from her reaction (as to whether or not she likes you).

if you don't want to play the jealously mind game then lay low, and act super BUSY for the next few days. follow dayv's advice, he is right it always works on girls (well most of the time

)