Our indoor cat has always been friendly but anxious, with a very delicate stomach (the vet says there's nothing "wrong" with her, he thinks it's a sort of IBS...).
Now it's getting worse, she's been losing a lot of weight and started peeing in our house, which she'd never done before. I think it's mostly because DH stupidly (stupidly!!!) brought a kitten back home a few months ago, who is now bullying her.
The vet ruled out major health problems, so it's clearly stress-related. I've started putting the grown-up kitten out during the day (he loves it), so our indoor cat has some space to herself. I've bought her some Feliway, which she does seem to love.
The vet suggested we give her a room to herself, keeping the other cat out, but that's not easy because if we let her on her own in our living room or bedroom she pees there :-/
Any other suggestions for measures I could take to help my poor stressed-out kitty relax?