An update on the kitty progress from Stew in answering my email query:

Q How are the cats doing? No fisticuffs, I hope?

A Not that I've seen.. and there aren't any large tufts of hair lying around.

I was out for a couple of hours picking up Sierra and
having lunch but things seem okay. Tense but okay.
Wili was holed up in the kitchen window while Tobe
roamed the house.

Both litter boxes have been used but I have no way to tell by which kitty.

My poor cat. Hopefully, she'll rebound to ownership soon. I mean, she managed to do so at Mom's place, overcoming two cats with seniority, why not in her own house?

And, I stand formally corrected, it's Tobe, not Tobie.