I'm not trying to be another one of those people that go but... That's why we should NEVER house snakes together. The best advice I can give you is to separate all the snakes and keep them separate, and the injured female should be alright as long as you keep the wounds clean. I can't stress the importance of separating at least the wounded female from the others for the sake of hygiene since she does have an open wound on her, but ultimately you should ABSOLUTELY separate all the snakes. I'm willing to bet that the reason your male isn't eating is because he's feeling threatened by the bigger females, and he's being out-competed.