I think it's part of her game plan to allow certain people to believe she is a two way girl.
That leaves her free to get tactile with either sex to win herself favours. Notice how she was lying in Jades lap like a lover would.
Then at another stage tongue kissing Alex. She has made herself a free agent so as to suck up to any gender she wants to use.
I give her credit for playing a clever game. But it's to nasty for me to stomach. As Helen sould say. "she's so gotta go".