LOL!
My first show golden had a WC and a JH leg. I was a miserable field trainer, but she was force fetched (had to do it for obedience, she would retrieve real birds, but wood dumbells didn't interest her in the least). One day, I needed a roll of TP (not going to go into any more detail there!) It was across the room. Believe it or not, I told her to fetch it, and she did. :) However, your dog sounds much further along than she ever got! (we had 2 CDX legs when she started having vision problems and I retired her).
susie
Well, my girl's never retrieved a roll of TP . . . but we do practice blinds on the laundry. (We have this weird house with random areas open to the second floor - everybody dumps the laundry from the second floor down into the foyer around the corner from the laundry room, so I send the dog "Back" to pick up laundry. She's pretty good at it, but I hope she never finds an odd sock in the field, or she'll be returning with that first before she brings the duck.)