Im confused if she is really a frand?

i have a frand named kayla and she really only hang with me when i have something she wants or when i bring my laptop to skool.when i told a few people that it feels like she treats me like crap she found out and told two of my frands to stop being frands with me. one week later after almost crying during everyday of skool she says she wants to be frands again. but when she went around sprending rumors about me and didn't defend me when this guy was saying how this girl beat my *** instead she laughed and made a joke about it. so i got mad at her and didn't talk to her for a week and then she tells me to get over it! it's like she's telling me that i'm not aloud to get mad at her. WTF is that! so what should i do?