I would start her at the beginning .....Puppy class and then onto obedience classes .....she will need to learn steadiness before taking on gundog lessons . Our 9 month old clumber spaniel has just developed enough steadiness to be able to go to basic gundog lessons . Our cocker is 18 weeks old and is going to obedience lessons and is months off any further training . At our lessons we are doing steadiness , leaving and not chasing - all are which important to gundogs ....as well as the usual manners , walking to heal ,recall , retrieving to hand and mixing with others and learning to be steady around all ages and sizes of dogs .
So by putting the early age stuff in , the steadiness will stand her in good stead for the gundog training in the future