Dog Questions

I recently got a dog from a neighbor. She is a husky mix. She told me that she could not control her when she tried to groom her. She also had no leash manners. It did not take very long to teach her how to walk on a leash. Much to my surprise, I have no trouble with brushing her fur. She seems to really enjoy it. The vet showed me how to clip her nails and brush her teeth. He had no problem doing this, but I do. What could I be doing wrong?