Hi, you could try having a little treat in your hand to keep your dogs attention on you and always praise your dog when she does good. Your dog should never pull you along its being dominant over you. Let her know its not acceptable to pull, a little tug on the lead and a strong load BAA may alo do the trick. Do you let her get away with everything and getting her own way? Maybe she needs to know who`s boss.
Hope this helped. Good luck