[jyl]

We chose the family room for the introduction, because Old Kitty spends less time there than in the bedrooms. Put New Kitty there for a day with food, box, etc. Played with her to tire her out. Then brought Old Kitty up. New Kitty was sleeping, hidden under a shelf. Old Kitty didn't notice her, and went to sleep. We all fell asleep watching TV. Eventually Old Kitty woke up, walked around, found New Kitty. They hissed at each other, Old Kitty sulked for awhile then went back to sleep, New Kitty went back to sleep right away. I think this is a promising start.