Okay, Patches has us completely mystified.
I shut Patches out of our room last night, since she was so unfriendly to Sam and didn’t want to stay out of the bed. Somehow, that seems to have caused her to realize that Sam’s pack hierarchy is much higher than hers, because she was quite friendly to him this morning — really relieved to see a human when he came out of our room! He walked her and has been able to pet her. He sat down on the couch and she got in his lap for cuddles.
Then I got up. And she’s acting as if she’s terrified of him again! She absolutely will not go near him. She won’t allow him to walk her. If I put the leash on her and hand it to him, she pulls on it ’til the collar slips off. She’s staying within inches of me at all times, following me around the house as if she fears I’m going to disappear at any moment.