I don't think she fully grasped her own sexuality. But for the random person who needs to know.
She is bi/pan with a preference for women. I'll go even further and say emotionally attracted to women only. It's one thing to pretend to be straight under pressure. But I can't imagine for any kind of money or love envy sleeping with someone I found repugnant.
...Well, this was certainly a rather...interesting one. She plays it off as her hating him and it's implied she likes Sara, but I feel she doesn't exactly...hate him as much as she says, I dunno.
The ending was rather intriguing too. Kind of makes me want a sequel to explore their relationship a little.