Well, just now I had some girls come in the shop and they were oohing and ahhing over Uni, that seemed to make her happy. Now her tail is up and she's digging in a sweater. Thought I's try to make her eat while she's in a good mood, but still wouldn't eat.
Katie is the more dominant one. She takes all of Uni's stuff without a second thought. Uni will try to get it back, but always backs down. I would think that the newcomer would be a bit apprehensive about their new surroundings and kind of not make themselves too much at home but Katie settled right in and made her self very comfortable.
I was thinking maybe Uni started humping her bed again to show dominance towards the one thing she can? I even caught katie laying in the humping bed once too.

that bed is not for sleeping!