First of all, if her hips are bothering her, find a way to alleviate the pain. Cosequin, Dasuquin. There are other anti-arthritics for dogs, and different ones help different dogs. I have one dog with bad hips that gets an Adequanshot (no space between those 2 words because this system won't stop correcting the name of the drug) every two weeks in addition to Cosequin orally.
After that. I agree that you're the one doing the same thing over and over and expecting different results. Stop with the yelling and expecting her to "understand." What you both need is to find a workable alternative behavior. I've never had exactly your situation, but I have a highly reactive dog that I take to shows. She'd be embarrassing if I relied on just her leash training to get her into the crating area of a show without her reacting to other dogs. Since she's very food motivated, I stick a bit of food in her face, and she's too preoccupied with that to react to the other dogs. You need something like that, a distractor, a trained alternative behavior, maybe a device such as the Easy Walk harness discussed in another thread here that turns a lunging dog back toward the handler. Anything you try will work better if you can start it at a distance from the problem until you both have a handle on it.
Also, IMO no dog who doesn't like it should have to put up with strangers touching, fawning over, or bugging. Even in a RV park there must be ways to walk her at times and in places away from other people. Develop a way to make people give her space. Teach her to sit while you call out something like, "I'm sorry, but please don't come close. My dog was abused and doesn't like strangers." Why risk her biting anyone? Keep anyone she reacts badly to away from her.
After that. I agree that you're the one doing the same thing over and over and expecting different results. Stop with the yelling and expecting her to "understand." What you both need is to find a workable alternative behavior. I've never had exactly your situation, but I have a highly reactive dog that I take to shows. She'd be embarrassing if I relied on just her leash training to get her into the crating area of a show without her reacting to other dogs. Since she's very food motivated, I stick a bit of food in her face, and she's too preoccupied with that to react to the other dogs. You need something like that, a distractor, a trained alternative behavior, maybe a device such as the Easy Walk harness discussed in another thread here that turns a lunging dog back toward the handler. Anything you try will work better if you can start it at a distance from the problem until you both have a handle on it.
Also, IMO no dog who doesn't like it should have to put up with strangers touching, fawning over, or bugging. Even in a RV park there must be ways to walk her at times and in places away from other people. Develop a way to make people give her space. Teach her to sit while you call out something like, "I'm sorry, but please don't come close. My dog was abused and doesn't like strangers." Why risk her biting anyone? Keep anyone she reacts badly to away from her.