I would get it looked st. We sold a pup once that had a similar issue. The guy we sold it to called us up and said the pup would leak a little pee from tome to time. She would go pee outside then leak a little more back in the house. It turns out she had some rare condition that she basically had no bladder. The guy refused to give her up and he was going to pay for the surgery to have the condition fixed so I refunded his money and all was good. The vet at WSU that diagnosed it said it happens every so often, not genetic just did not develop correctly. That was the last litter of pup we had, almost 9 years ago. Good luck and I hope she grows out of it,