×2If you have a docile female you can put in with her you could put them into a separate area [where they will be safe from preds] and let her recoup maybe that is the problem someone is bullying her. Putting another female with her keeps her from being lonely and letting everyone see each other keeps them from looking like newbies when you put them back.
Unfortunately once one is injured or sick it seems like the bullying gets so much worse too. I would separate her for a few days at least to assess wether she is eating and drinking or if it's just that the others are keeping her from it. Like miss Lydia said, if you have a nice girl to keep her company that would be nice for her.

I wish they would all just get along
