[Jwhear]

I would use a steam cleaner on the couch cushions that you can't remove, be careful washing the covers though since they could discolor and/or shrink. They make a stuff called Urine Off and it works really well.

As for getting her to stop, try not letting her or the new puppy on the couch and try using bitter apple to keep them off. That would only eliminate urine on the couch and not the urinating problem. The other thing is I would have her checked by a vet as she may have a baddler infection which would or could cause uncontrollable urinating. It sounds like a behavioral thing, but it could be medical as well.

Good luck