I CAN"T STAND MY BEST FRIEND I WANT TO KILL HER HELP!!!!?

She always starts drama like today my friend did something really embarrassing in like so many years ago.I mean I just remembered and I like said to my friend you rember what happened 3 years ago and she's like O god.Then my best friend wanted to know but,My best friend did not want to tell her because it was super embarrassing.And so she told me to tell her but,It wasn't my secret to tell and then she's started getting all mad and saying you tell all my secrets.WHEN NO I DON'T.And then she started cussing and going phys co and throwing tatrums and cussing at me and my friends and calling me a brat and called me the b word and started screaming at me and starting drama and problems.Then she went to the cousulers office and basicly told the cousuler lies then my friend came in and said the reason she's mad is because she would not tell her her secret.I am sick of her she is a freak she gets mad over every thing and is a brat.