Dog Training Help

[Woodduck Commander]

Hey guys I have another dog training help request if anyone can help. Training with my new dog dixie is going pretty well, for 7 weeks old I think she is doing great. I have her sitting, staying, waiting to fetch until I say, retrieving the dummy without seeing the throw, retrieving in the water, around bushes, down slopes, and she is even super interested in any ducks and birds that pass by our training ground (right next to a drainage canal full of woodducks) but she is struggling with coming directly to me after the retrieval. She comes about 4 feet from me and lays down with it, not really chewing or anything, just won't come put it in my hand. Any tips on how to correct this? I know she is just a puppy, but she just keeps learning everything I try so I want to refine her while she is interested. THanks in advance!