You need to socialize her. Take her everywhere you can with you.
Switch from a harness, which they will just lean into and pull, to
a choke chain or a soft material choke chain. Leave the choke chain
on only for taking her out on walks, etc. Try enrolling her in an
obedience class near you. Before putting on the choke chain, make
her sit in front of you (keep your voice calm, not excited) and put
the choke chain on calmly, don't let her slink away, keep her in
the sit position. Take her out for a walk or something fun right
afterwards, give her a small treat after you put the choke chain
on. She will eventually relate the choke chain to fun things and
will wiggle all over when she sees it in your hands. I think an
obedience class would be good for the both of you. Ask your local
Humane Society where one is or your Veterinarian.