Persian kittens & cats in Georgetown, Kentucky

I have had this cat for 8 years.In the past 3 months, she has started having normal bowel movements but they are outside of the litter box daily.I have cleaned the litter box daily, tried different litters and added an additional litter box.My sister gave my kids a kitten about 3 months ago and that's when this started. I have a small dog and the kitten in addition to her.If the other pets do not bother her, then she doesn't acknowledge them. If one of them makes her mad by getting in her space,she will hiss and run away to hide.She has been around small children and has never attempted to hurt them. She prefers her space and spends most of her days under a bed sleeping I cannot afford to take her to the vet,I do not want to take her to a shelter where she may be euthanized. I would get rid of the kitten but my kids are obsessed with her. She has beautiful long solid black hair. She would do best in a home with older cats or more space where she can be xxxx@xxxx.x can be cuddly.