I used to avoid the KH when the CO's came around so I've only had any contact with about four CO-wives. Only one out of the four seemed happy and didn't have major food allergies or obvious problems with depression.
Sister L, had the full-blown allergic to everything, must eat organic food thing. She was whiney, demanding and rude. My friend and I figured that she probably developed these problems in order to get some attention. It worked pretty well. Everybody would talk about what they needed to do to avoid setting off Sister L's allergies and were very solicitous of her.
There was one episode where she jumped out of a car group in hysterics because someone was wearing some sort of scented handcream or had used scented shampoo. This even got the attention of her husband, who raced off after her into their camper to make sure she hadn't gone into a coma or something. Guess you do what you have to.
Sister S, had terrible back trouble...her difficulty was not psychosomatic, she eventually had surgery for the problem. She had to become demanding about the type of bedding provided as she could not sleep on hide-a-beds or worn out mattresses (this was when they'd gotten rid of the camper-vans and forced the COs and wives to stay with congregation members). I felt very badly for her. She was a nice woman and lived in pain almost all the time.
I heard her husband left the work, the JWs and Sister S and ran off with another woman.
Sister B, was simply the bitchiest, snootiest woman ever...one assumes that she didn't much like her life. She couldn't even pretend any more. I avoided her whenever possible.
At the time I left, at least some of the CO couples had apartments in KHs centrally located in the circuit so that they could, if they wanted to, travel back and forth from their home to the various congregations.