Its tough to teach something that isn't genetically there.
Your issue is two fold, she doesn't 'hunt' and when there is action she wants to go blow it up.
I can handle a dog that doesn't hunt, I can't stand a dog that hinders my ability for my good dog to work or someone else to get a shot.
I feel even basic obedience would make this dog palatable to the other hunters (even as simple as a sit on a whistle). Does your uncle do any type of basic obedience with the dog? I'm guessing this dog has never seen a check cord.
If you think the dog has potential and you want to work, I suggest not running her in the field but start with basic puppy training that it appears she lacks. Your going to spend 10x the time that you would have at 6 months but if you think it'll be worth it, I would encourage you to put in the time