Pup is 8 months old. Everything was going great until I started using the blank pistol. She had been exposed to loud sounds since we brought her home. Finally decided over a month ago to use a blank pistol in our dummy training. Shot doesn't bother her however she refuses to retrieve after a blank is fired. I let it sit for a couple weeks then again Then tried again. That time I went out on a hot day and threw a couple fun bumpers into the pond. 3rd one as she was retrieving it I shot a blank behind my back. She immediately dropped it and would not go out and get it again with any amount of coaxing. Had to go get my old crippled dog to get my dummy back. Now she doesn't seem to have much interest in retrieving blanks or not. Thinking about sending her to a professional trainer as I have just about given up on her. Any ideas? She is a smart dog with a heck of a nose but if she doesn't retrieve I don't have much use for her.