what sort of bond do you have with her , apart from patting her what sort of contact do you have with her, has she ever retrieved, a lot of questions asked on here dont have a simple answer,every case is different, seems to be sort of block between you's,,she doesn't sound like a high drive bitch,,what age did you get her at and was she well socialised,,i've always used play as a relationship builder between me and the mutt, but if she dont have much drive it might take a while to kick in,,i would encourage more contact between you and her on a daily basis,also try feeding some of her grub by