Refuses to use her nose???
Can you tell us how she is refusing? She has to breath through her nose, so she is taking in air, unless she doesnt want to hunt...I dont really understand "how" she can refuseto use her nose. What are you doing, when she "refuses"?

Is it a stubborn dog? A pup? An older dog? What training stage is she in?(intro, Started, Finished) I need some more details, thats a pretty vague statement, my dog wont use her nose...