She may have a bladder infection - is the place where she has urinted smell a bit fishy, if so this would indicate cystitis, get her to the vet for a check up, is she neutered ?
If she has no infection, and she is a rescue dog, she may have just got into a bad habit - try crating her overnight only for a while to see if she improves - most dogs hate soiling their sleeping area so she will have to 'hold on' until you let her out in the morning. Let us know how you get on.