Someone once asked...
Someone answered with kindness...
Do not plot revenge. Relationships are complicated , but remember always , we are all human. She might very well be a bitch , but an eye for an eye and the whole world goes blind! I would advice to talk to her , or simply move on. If this is happening in your friendgroup i am sure you can talk about it to the rest of your actual friends. Revenge will only bring you problems. Rift in the friendgroup , herself having another revenge , or maybe the worst : Hurting her more than you expected. Take the high road , the view is always better there !
✦ This sign has found its fate.