Best friend fight? I tried to apologize. please help?

okay i know they are like ur "Bff's"But lets face it carla will stick up for kate nomatter what happens, because she is her sister. Its likea twin thing. So in a way carla is not wrong, but she is for not listning to you. Because you cannot take a side of a family member if they did something wrong its not cool. I think u should find better freinds. YOU DID NOTHING WRONG just apologize and if they don't wanna apoogize back or tlk to u leave em that proves what freinds they really were