cats

Cats get the majority of their moisture via food. Most dry food has about 10% moisture. A strictly dry food diet (regardless of how often you see your cat drinking) can lead to urine crystals, which make urinating painful. This can cause them to associate the litter box with pain. They can seek out a soft comfortable place to pee.

We had two cats that peed on anything soft. Within a week of switching to a moisture rich diet one had completely gone back to the litter box, while the other still has some issues from time to time.

Have you talked to your vet? Could be a uti.

You need to replace that couch though. Now it's been marked, it'll never stop.

Get her checked for a UTI

Probably a UTI but you can try putting a puppy pad on there and they might pee on that instead. At least until you get them checked out. Get some Resolve Urine remover if you have some mild spots.

Depends on a lot of things. I’m no expert but here is what I can throw in.

Is this a new cat? Maybe it needs training.

Is this new behavior? If it’s something new then maybe the cat has a medical problem. Our cat was clogged and the vet needed to do surgery.

I had this problem with my cat! She had an ear infection that I didn't know about, and stopped peeing on my bed and couches once it was healed up

I see some good suggestions from others, but where is her litter box? Are there any other pets in the household?