If you had taken Jo to training twice before I would go back to that trainer and talk to them. They would know Jo and you and any problems that you may have had. They should be more then happy to help you free of charge since you have paid them for training.
They told me to use a bark collor, and it was for obedience, not really about her barking..She learned what she was suppost to learn, so I dont think I can take her back for that..?