ah, meant to say that it is a must for all yorkies to have them brushed daily, not just the puppies. But it definatly seemed like Rizzo's fur tangled a whole lot easier when he was just a puppy. Try feeding her treats as you are brushing her to associate the brush with something delicious. Try to make it a treat she only gets at grooming times so when she sees you pulling out that specific treat she knows what time it is and should sit patiently for you while you do your work on her fur.
Good luck!