Everything is fine here. Carl said when he puts Sassy in the laundry room at night, she just walks over to her blanket and plops down. She's usually only there from tenish at night to fiveish in the morning. She's very playful in the morning running from room to room. Sadie is still Sadie, she's taking a pill every other day, she's quiet, seldom plays, spends her day under the bed, on the bed or in the window. They play chase every once in a while with no discernible aggression. Sadie rules on the top floor and Sassy rules the family room level, they share the basement and living room level.
I don't know what we're going to do when we travel next. Keep Sassy locked up full time? I doubt that our sitter will want to keep our hours for feeding and locking her up. And I suspect Sassy is only good because we're home with her during the day. We're eight days with no mess now. I continue to check on Sassy numerous times a day, interacting with her each time. Since no news is good news, if you don't hear from me for a while that means all is well.