I know house-training can be a tough time. If you reply with more info on the subject we may be of some help. How old is Belle? How long have you had her? You said she was kenneled for a long time, did she come from the shelter? Do you have any background info. on her? Are her feedings regular (at the same time everyday)? Does she urinate or defecate or both? Does it happen while you are there or while you are looking? Does she do it in her crate?

When you say she KNOWS she is not suposed to go potty inside, how do you know that? If she really truley does know not to potty inside then a trip to the vet is highly reccomended as it may be a urinary, blader or kidney infection or stones.