How old is she? It takes quite a while until they are completely house trained that is with no accidents. You should try to put her on a consistent schedule?
After she has eaten and done drinking water, ample time to digest? Just watch her she will let you know? And whenever she finally does do it, give her plenty of praise get excited, then she'll know and understand what you want her to do? Usually in any kind of training all they want to do is make you happy. You just need to make it obvious to them? But never scold them, these dogs (fur persons) are very sensitive....a slight change in the tone of my voice and he knows exactly how I feel, almost as if he understands everything? Good Luck!
