My 1 1/2 year old CLF is a little behind on training do to my busy life but progressing very well. Here recently I have been seeing a problem and im not sure how to handle it. It might be a very stupid question but I didn't know how to search the problem so here it is. On retrieves she comes back to me but doesn't want to release the bumber. Ive noticed it starting to happpen on birds as well. Like she thinks its a game. I know my 6 year old will throw bumbers for her when he gets out of school before I get home. Could this be causing the problem by him not really "enforcing" any obedience?