Poor Josie! She just doesn't understand. In training you MUST make sure the dog learns the behavior before you can insist on them listening. And it takes a lot of repetitive training to get a dog to understand not to do something that is a natural instict to do.

She sounds like she is a dominant female. I don't think it's that she won't listen, I think it's that she has not be trained to listen! You need to learn to be alpha over her. She is just doing what comes natural, especially to a alpha dog, and that is keeping her territtory safe. If it is something that you do not want then you need to train her NOT to do it or condition her so she stops on command. DO NOT USE A CHOKE CHAIN and give pops with the leash when she is barking. Positive reinforcement is enough to correct this situation.

First though you need to understand that commands such as "That's enough, no bark" are ineffective in training. Your dog does not know the entire english language. She is a dog and thinks like a dog. If you want her to understand what you are saying she has to be taught. By saying long phrases, you are wasting your time and hers by saying them. What you need to do is establish a one word command Silent or Quiet. No bark is ok too but I like to use one word commands for clarity.

The process of getting Jo to stop barking is to teach her to bark on command. Once she knows how to bark on command then you can condition her to stop barking on command. Then when she barks in situations where it is unwanted behavior you can give her the command to stop and she will understand. Don't expect her to listen if she has not been taught and is only doing what comes naturally by instinct!