Should i still be friends with this 2faced girl?

i hav 2 best friends friend a and friend b. friend a is like my girl she my bestiee and all. but friend b is 2 faced. friend b is always talking about me to friend a. my hair is not long and its not short its like jenifer Hudson normal hair. she calles me bald headed. she walked me home and then she went and called one of my other friends (friend c) and told friend c she thought i lived in a bigger house nd she was just talk in madd stuff. she should not be talking because she lives in an apartment. friend a thinks i scared of friend b and im not scared of her she madd big. friend b thinks she is all that because she claims she is related to an 7th grader. *we are in 6th grade* she is 2faced and its just pissin me off. she always talkin bout somebody and hav no actions. i talk about people and she tells me i hav no actions. i talk about this boy in my cl all the time he came and slaped me so i grabbed him by his shirt and was choking him so i dont understand how do i hav no actions..... i jus need help should i or should i not be her friend??