When Sam came home after his surgery the other cats weren’t quite sure what to make of him, Boo would hiss at him and Trixie mostly avoided him. We saw this years ago after Templeton’s surgery when Scout hissed at him at first, I’m guessing it’s the different smell when they first come home. Once his wound healed enough that we could take off his onesie and he could give himself a bath, Trixie recognized her hero once more and buried her head in his belly as he slept on my legs. He gave me a look and I was poised to move her lest she bump his sore mouth or shoulder but she instantly fell asleep. He decided to tolerate her affections despite not feeling well, curling up around her and joining her in slumber.