oh...i am not sterotyping any person....
but given the scenario that you met her in a club, probably she
just wana have some fun? gals and guys alike..they all think people
who goes clubbing are mostly(not all) out for some fun... 
frankly speaking, never really get too serious with a person you
just met, till you know him/her better....
one more thing..heard before "play hard to get" ?