Does anyone have any suggestions?

My hubby and I already have 4 ferrets. We were at a feed store getting litter and there was a poor little girl ferret needing a home so we got her. She is very terrified of the other ferrets. We dont think shes ever been around any other ones. all four were nice to her the first couple days. The 3rd day our very first female started attacking her, poop actually flew out she was so scared. she loves me though. She will run into my lap and fall asleep when scared and snuggle to me and let me pet her. But now we are suspecting shes blind. should we just isolate her from the rest until sat. We see the vet sat to talk about the situation and all. I dont want her to stay in fear for that long. We had her since friday.