Thank you for all your advice. Her and her sister DO get along well, they play all the time. Nikita KNOWS she is doing something wrong, for example, just the other day I happened to be home and she was walking on the couch, scratching like she does before she pees, I yelled at her to get off...
I know, I've read the sticky posts, and they just haven't helped. We're desperate here.
We adopted Nikita and her sister Mystique last March. They were fostered, litter trained, everything was fantastic.
About 4 months ago, we noticed Nikita was peeing on the furniture. We hadn't changed...
