We've known for a long time that it was the right thing to do. She was over 20, getting very thin, not eating and generally not happy.
We had three cats in total, one a big ginger boy and the other a girl. She and the old cat got on really well. She's prowling around very unhappy and I'm not sure what I should do. Just a bit more info, they are mostly farm cats but definitely not feral. Any ideas how I might handle the fact that the other cat will miss her very much and how I can make it easier for her.