If Kaijah is peeing only a little at a time, it is possible that she has a UTI or bladder stones causes this. As for humping people's backs, it could be that she is becoming sexually mature leading to this behavior. I would have her seen by a vet in the morning. The vet can do a physical exam, routine blood tests, urinalysis, and possibly x-rays to diagnose what is causing her to pee a little at a time, and then can discuss treatment options with you. You can also discuss spaying her with the vet if you don't want to breed her. Good luck, I hope this helps!