Okay, I'm currently fostering my cousin's chihuahua mix until she can find a pet-friendly apartment. Tinkerbell submissively urinates. I keep her in an x-pen while I'm at work. When I go to get her to take her potty and play, she hunkers and pees. I always make sure my demeanor is positive around her and she wags her tail while doing this. I also don't offer eye-contact while getting her out. This isn't something I've dealt with before, so any suggestions are welcome.