Have you explained to the stud dog that you got your girl on breeding terms from her breeder?

In England (where I'm from) you'd offer pick of the litter to the original breeder, then 2nd pick would go to the stud dog owner. Then you'd get 3rd pick.

If only one puppy then original breeder gets the pup, stud dog owner gets $$ and you're left with nothing.

Breeding terms and pick of litter instead of stud fees is really messy and needs every eventuality written down and agreed before any mating takes place.

Good luck and I hope the whelping goes well.