hi i am new here- need some help, i have 4 indoor cats-3 domestic and 1 feral cat named kitty. kitty has been with us for the last 8 years- never has been a problem and will cooperate when examined by the vet. she likes and trust my daughter the best, she sleeps and spends most of her time in my daughters room. she does use the same cat boxes as the other cats in the house, which are located in the laundry room. 8 months ago the kitty was treated for cystitis I saw her (urinated blood in the cat box.)- which resolved after treatment. while i was sitting on the couch recently i noticed kitty jump up onto the chair across from me (which is unusual behavior) and urinate. Since I had a white sheet on the chair i noticed that the urine was blood tinged. when the vet did the ultrasound to palpate her bladder for a sterile urine she thought she saw stones. she then did an xray for conformation which was neg. urine culture was neg. blood work was normal. they gave kitty 4 days of anti- inflammatory and prescribed desaquin daily. and she will return in a week to have another ultrasound by a specialist. since this all started kitty has been kept isolated in my daughters room with her own cat box-food and water. She is eating the special diet they prescribed for her, drinking and all ends are working. I decided to let her out of the room to see how she would behave. After a bit she went over to the chair that she urinated on and sat. I quickly shooed her off and within minutes she went into my daughters room and used the cat box. she then laid down on her bed. With that I have been hesitant to let her out of the room thinking that she will urinate on the chair or something else. The chair has since been cleaned with enzyme cat urine remover. she has never developed a close relationship with the other house cats, she doesn't like it when they go in my daughters room. am i doing her harm by keeping her separate in the room? Should she remain separate until the until stones have been ruled out. How do I encourage her to use the cat boxes in the laundry room? Do I just remove the cat box that she has been using in my daughters room? i would appreciate any advice. charlie s