Usually a harness first can be an issue for most people. If she is handling it fine and it sounds like she is your good.
You need to reshape her association with the collar. Don't throw one on and head out for training, put it around her food bowl and let her get use to seeing/smelling it. Let her have it on around the house while she is chilling out. Just a thought,
Sounds like your doing good! At the point she was in a bit my time a finger snap a finger poke or a tap on the head with the loose end of the leash will be all that's needed! Or a simple Psst or Ah. If you don't have a dog that is wildly out of control it's pretty simple!
You have a "Bubble Dog" that got coined in another thread about taking dogs that are not "born" friendly out in public. Hence the ladies reaction!
I had a "bubble dog" and he is just fine today!
No one was allowed to pet him, he went behind me
and learned that was his place when I spoke to folks. No dog ever got near him! Ignore and move on. I kept him safe form people and dogs and people and dogs safe from him!
A couple of links for you:
New Dog, Very Challenging
Post * has some links, "Who Pets my Puppy or Dog" is what I did and it worked just fine for me/us.
And going back to the collar thing I would consider this also or maybe instead or at least invaddition to!
Wheres my sanity: Sit on the Dog, aka: The long down
I used to say I never had the need with my dogs they don't have problems! Maybe it would have helped with my Bubble dog though?
Regardless I did something very similar with a fearful rescue yesterday. The dog has fear issues with people. I had seen him last week and just looked so sad (Boxer) well I sat him down between my legs and basically kept him there I did let him sit and stand and crawl around abit but he had to stay with me! So not in strict accordance to the plan. Nonetheless he settled down and played bittie face with the other Boxers..uh in my lap! I was pretty much under three of them! Boxer thing!
Anyway I do think the "Sitting on dog thing will help!"
And the muzzle thing I did that also, once I could read my dog I removed it on walks. He was not going crazy so no need for it. I waited longer still before I allowed anyone to Pet him. You do the stop and talk for awhile and you will be able to see "the whatever kinda look on your dogs face!"
Then he is safe!
I used this muzzle:
A Great Small And Lightweight Nylon Mesh Muzzle
Not good for hot weather or vigorous exercise and not as secure as a real muzzle! But it sounds like it's more suited to what you need! A dog can remove it but it buys you time to gain control if needed! It also lowers the freak out factor of JQP!