R.D.
She's not going out enough. When you let her out, MAKE SURE SHE GOES, even if it means sitting outside with her for 20 minutes. You can also get a 'potty stick' (they sell them at Petsmart, I don't know what you have by you), which you put in the yard and let's off a pheromone that makes the pup WANT to go to the bathroom there (to kind of mark their territory). Be consistant... much like potty training a toddler. Even if you don't think she has to go, let her out, and often. Give lots of verbal praise when she goes outside! Good luck with that pup!