You can't stay FB's until you F. Making out doesn't count.
My guess would be she was going to fellate you that night, but her friends made her feel guilty for acting like a slut and she turned the story around.
If she was playing you, bitch style, she wouldn't be talking to you still.
A lot of women like the idea of being an independant woman who can play the man's part in a man's game. However, when it comes to pulling it off, most young women have trouble doing the One Night Stand, bang a guy for no good reason, type thing.
It gets easier for some of them after one time, but for most, they view one night stands/banging a guy on the first night as counter productive to getting a good boyfriend. Alcohol helps, though.