You're going to laugh, but...consider anxiety medication. If she's still spraying even after being spayed, she's probably got anxiety issues. There are also sprayable cat pheremones that work on some cats.
My sister is a crazy cat lady and tried EVERYTHING with her fifth cat, but the cat ruined all of her carpets and she had to replace the flooring with laminate. Finally, the anxiety medication has worked after years of trying other solutions.
If she's peeing primarily on textiles (clothes, bedding, etc.) she may be trying to tell you that she dislikes the texture/location/feel of her litter box. Try a non-hooded SECOND litter box (so that she doesn't have to compete with the other kitten) in a quiet location with a different kind of litter than you've been using, preferably the unscented kind.
Feliway atomizer worked wonders with my high strung female. Petco, etc carries it and you can probably get it at your vets.
Another of my females has chronic bladder inflamation which sometimes becomes an infection. She lets me know when she is uncomfortable by peeing on - coats, tote bags, suitcases, clothing etc left on the floor. When it is really bad, she'll pee on papers, dog bed, carpet.
Simple Solutions has helped alot - sniff out fresh spots, then spray per directions. It seems to keep the cats off their favorite pee spots and cuts the odor out.
All three of mine are now on a raw diet. Time consuming to prepare, but it has made a huge difference in their overall health and activity level. Google cat nutrition raw diet -
Good luck with this. It sounds like it's most likely anxiety/territorial in nature, and it can be helped.
Form follows function, or does function follow form?
Just asked my sis, who is sitting on the couch across the way from me. She says that in addition to the meds, most of the peeing was happening at night, so she sequesters the cat in a small bathroom at night with both a clean litter box and several puppy pads since the cat doesn't want to use the litter box more than once. The cat seems much happier to be by herself in a safe space at night.
I would put her in a cage except when you can directly supervise her. If she starts to pee where she shouldn't, back into the cage. It sounds to me like she just gets excited and doesn't understand. Kind of like the little kid who laughs until they pee.
I use natural litter and have begun to use Distillers Grain for cat litter. Distillers Grain is the left overs from Ethanol production. It has a sandy feel and a yeasty smell that the cats seem to like. I have also used Wheat Middlings, corn, pine and the newspaper pellets.
In addition to the other great ideas, do not give this kitty full run of the house etc. Confine her to one room. On the 'I awoke Christmas morning to her peeing on me. ' - I would be tempted to have kitty PTS if all physical or other causes were ruled out. That is not normal nor tolerable kitty behavior. I know you said you were reluctant to make her a barn cat, and probably just as well as you would probably find cat pee on a lot of barn related items you'd rather not have so anointed.
RIP Sasha, best dog ever, pictured shortly before she died, Death either by euthanasia or natural causes is only the end of the animal inhabiting its body; I believe the spirit lives on.
LMH- the anti-anxiety meds were pretty much an instant fix for my guy, who started the behavior at age six for no apparent reason. He's been on them six months now, and our only two slips were once when I missed a dosing, and once when he was accidentally locked in the laundry room. Good luck with your girl- you have my sympathy!
To me, that screams that she's trying to tell you something is wrong.
Besides a UTI, there are a lot of other medicial reasons for peeing outside the box. Definatly have a good heart to heart with the vet.
I'd seriously consider bringing her to a DVM behaviorist. There is one at UGA: http://www.vet.uga.edu/var/behavior.php
They are the vets that would see this behavior most often, and therefore prescibe medicine most often for it, and can help rule out both medicial and behavior issues.
AH! LMH, I almost forgot. My mom "crate trained" her cats at one point. This may be helpful, especially if it is nighttime peeing.
Get her crate and make it wonderfully cushy. When you're ready for bed, "Ok, time for bed." announce, pick her up, put her in her cushy crate WITH a favorite couple of treats.
Go to bed.
Repeat. Eventually, yes, they do get crate trained. My Mom had 6 crates ... 2 dogs and 4 cats. Every night it was the same ... "Ok. Time for bed!" everybody would hop into their crates just waiting for their treat ... once they had it, they'd curl up and go to bed.
IF she is peeing in the crate, then I would say it is a medical problem too.
"For God hates utterly
The bray of bragging tongues."
Sophocles, Antigone Spoken by the Leader of the Chorus of Theban Elders
My daughter's cat started doing similar things last year at the age of 13. We checked for every medical reason, had a heart to heart with the vet , and ended up putting her to sleep this year after a year of living in a cat cage or confined to a single small room. She was not happy with the only life that we could give her and nothing could be done medically for her.
It was not a decision we made lightly or easily. She had been my 15 year old daughter's pet for 14 years and it was a heartbreaking thing to do, but I will not allow an animal to destroy my house and I will not keep an animal in a state of confinement that it is unhappy in .
Lapeer ... a small drinking town with a farming problem.
Proud Closet Canterer!