If she has a LOT of guy friends and just a few girl friends, this is a huge indication that she is an attention wh0re. Watch her behavior with these other guy friends. She keeps them around by dressing suggestively, flirting with them, might even tease them by "considering" them and keeping them in limbo. She will use them for rides, free food, gifts, etc. This type of female is usually insecure and has an addiction to male validation. These girls will probably never date out of her pool of guy friends, as this could jeapordize her on-demand male attention machine. All girls do this to some extent, but the attention wh0re is an especially vicious breed. She will deny her behavior and act innocent. Don't be fooled.
I suggest you call her out on her little game and then cut off communication.