Bertie is out and about! I opened the gate to the back room. She was crying too much. Opened it yesterday and she didn't leave the room. Opened it Tuesday night and she stayed in my bedroom while I folded laundry. Tonight after I opened the gate I stayed in the living area. She came out. She stayed in my room for a while. Then came out to the living room. A little bit of growling and low-level yowling but other wise okay. And Spunky has met his match in her.
More later plus pictures.