If your dog's problem is incontinance, you might try some doggie pants or some places call them diapers. They're not as bad as they sound. My old dog wears them They are blue jeans with a pad and they work great. I have two and if one is soiled I switch while the other is washed and dried. Here are some:

http://www.petsmart.com/global/produ...ions&N=2023689

I bought mine at PetSmart and Petco. The brand I like the best is Simple Solutions.

If you truly think incontinance is causing it, I would take her for a vet visit. They have very good medications that usually solve the problem completely.