I would take Cammie to the vet and have her checked, You may want to call fist and see if they need a sample. Whenever I have talked to my vet about this type of thing they always want a sample. As for Halo, it sure does sound like it is behavior caused, but I would still call the vet and talk to them about it.

One of the most common reasons I know of for peeing inappropriately is health issues, the next is that there may something is wrong in the environment. Not saying that you are doing anything, but it may be something that the kitty thinks is out of whack.

Just my opinon, but I have had that happen before. Not to scare you or anything but my RB Flicka let us know that she was sick by peeing in the wrong places. I took her to the vet and it turned out that she had kidney problems.

Good luck and I hope everything turns out allright.