I'm sure you'll get some great advice here
But here's mine for what it's worth... You must prevent these accidents. So your dog shouldn't have access to the whole house because you can't be everywhere at once. Keep her where you are, even better, you should keep her tethered to you, also known as the umbilical cord method. That way, if you see her start sniffing the ground or position herself, you can distract her and run outside. Also, don't forget to praise her like crazy when she does her business outside. Treat her like a puppy. Take her out often and go with her. Don't just let her loose in the backyard: you must reinforce every pee in a good place! And, very soon, you should be able to put peeing on command (it's really helpful when you are in a hurry!)
Oh yes, make sure you use an odor neutralizer to clean the spots; bleach is not a good choice.
Thank you for adopting a dog from the SPCA
