I am having the same problem with Nina. She will no longer pee at night since the fireworks that lasted more than a week. She hates to go out after dark now. I now take her on a lead so she will at least get to the grass, but she just stands there and looks scared. I try to make it a good time by talking to her, and petting, but still no luck. When were were camping last week she was fine, it is the association with the back yard and noise. So she holds it every night for 14 hours when we are at home.
Chuck, Cooper and Nina
Shelter dogs aren't broken. They've simply experienced more life than other dogs. If they were human, we would call them wise. They would be the ones with tales to tell and stories to write. Do not pity a shelter dog. Adopt one.