Don't give up!  Every dog has their own unique way of being trained, you just have to figure out what that way is.  Watch how she responds to different things and I'm sure you'll soon figure out what you and your family can do to make it "click".  Once we figured out what it was for Chip, he was trained in 2 weeks, BUT it took us 6 months to figure it out... by then he was 8 months old 
