Spaniel trouble ahead

[BIGLURKS 874]

Well here goes had gun dogs my self for years lurchers and terriers and pure greys that I would say I have been able too train too my own good points that I like in my dogs all being able too sit retrieve very well and hunt up all day long well I've started seing a new girlfriend who is taking too shooting and hunting with a passion and alrdy has dogs of her own here is the problem she had a spaniel pup when I first met her and a 4 year old spaniel that was from working home before she got him well the pup is coming on a treat even working for me is a handy thing for me but her older dog that can hunt all day long and listhen too alot of commands she can give the dog will not retrieve though it will try too eat a pheasant whole during a retrieve and iam not joking feathers and all tried lots of things alrdy took it back too basic even with dummy's getting everything spot on till we move too dead birds and same again iam at my wits end and ive never had a dog like this before that I can't train and would be a Shame too leave it at home while we are out cos he hunts up so well and even great fit in to my own pack any advice would be greatly appreciated