I have had three hens turn neurotic, paranoid and withdrawn during this season's molt. I'm not anthropomorphizing, either. Normally they are outgoing and calm, but during the first very hard days of molt, they feel picked on and frightened by the least little thing. They run from me screeching. They were hiding in the coop to avoid the flock and potential bullies, and since they were acting like they were victims, some of the bullies obliged them.
The problem was they were not getting enough to eat, and losing strength. That sets them up for opportunistic infection. So I would take them off the perch in the morning and let them spend a few days in the "jail" pen so they could feel safe from bullying and get enough to eat.
All three needed only a couple of days of this special treatment to get their strength and mojo back, and all began to stand up to the bullies and they quit trying to isolate themselves.
Ruby has an "iffy" history so I wouldn't just assume she's okay. She may require a "tune-up" of TLC.

I have one right now that is a basket case, the way she acts sure does make her a target. If she's the same tomorrow, then she will get a time out
