It is sad that your dad is unwilling to work with you or has this strong dislike for your dog. I can imagine the stress that puts you and Jesse under.

You are wise to realize she may bite someone. The majority of dog bites are because the dog is fearful and not because a dog is aggressive. Fearful dogs only have one source of protection and that is their teeth. To desensitize your dog to her fears you need to realize two things. 1. It takes time and committment on your part and 2. You will need to be retrained on how you react when she is fearful.

Your best plan of action would be to find a pet behaviorist in your area to work with you individually. This way is the best because they could "see" the whole picture and give instant advice. It is very hard to give specific advice when you can't see the behavior or the owners reactions to it. A lot of times the owner feeds into the fear by the way they handle it. I'm not saying you are, I'm just saying someone working one on one with you could determine the "whole" picture. This is money always worth the investment. Ask your vet for recommendations or find a local all breed training club and ask them if they can recommend someone.

I wish you the best of luck. Jesse is lucky to have you in her life.