I apologise for the following useless answer, but reading your post I thought could you not try and find a gundog trainer nearer you who would give you one to one and do the stuff you need to do?
She sounds like Fippas...poor retrieve (easily bored of it), unnecessary noises (yapping and whining when excited), following a scent rather than complete a started task like retrieving
If you start a course or more serious training I'd love to hear how you're getting on