When Hobbit passed away, it didn't seem to bother our other house cat, 14 year old Tibboh. As they hadn't exactly been best buddies, we didn't think it would make any difference to our remaining pet.
After a while, we began to notice that Tibboh wanted more affection. She became cuddly, which was odd, because she'd never been especially cuddly before. It's been very strange watching her personality change now that she is alpha-cat of the house.
Wonko and I had a chuckle this afternoon when Tibboh snuggled up to Weeb while she was watching TV. Tibboh had head scritching ideas, I'm certain. Weeb, who had never been particularly comfortable with either cat getting too close to her, was happy to share her space and offer Tibboh some attention.
It's been an odd transition. Though I still very much miss Hobbit, it's nice to see Tibboh become more affectionate, especially with Weeb.