At the beginning of this year, I had four cats (3yrs m, 9yrs f, 15yrs m, 18yrs f.) I adopted the youngest cat when he was 7 months old, the others had been with me since their respective infancies. The youngest was adjusting to the household, he was learning that the older cats did not always (...okay, EVER) want to wrassle and play with him, everyone had their place in the hierarchy, all four cats would sleep on my bed at night.
In February 2014, the middle two cats got very ill and had to be put down. I was left with the eldest and the youngest. There was a bit of depressed behavior over the sudden losses, but nothing destructive. The eldest didn't eat as much for a few days, and now she prefers to be fed 3-4 times a day, smaller meals.
The youngest sleeps on my bed every night, but the eldest won't ever go up there any more except briefly during the day. (She is able to get up there on her own - there are boxes that she and the other cat used for stairs, in the last three years.) When I pick her up and sit on the bed and give her a treat, she eats the treat...and jumps right down off the bed. Is there anything that I can do, to let her know that she's most definitely still welcome? I don't think she has too many years left in her, and I miss seeing her in the mornings. (She does come and sit right beside me when I'm working at the computer, so she's not avoiding me completely.)