I am so sorry you are going through this with your little one. I think you are doing all that you can and going to the outside training will be a big benefit.
We had the same problem with Lottie as a puppy she was picked up by another dog and since then she freaks out when she is outside and sees any dog!!
We have tried allsorts of things and classes an have made a little progress but she will never trust large dogs. She has made progress with some small dogs that she meets on a regular basis and she has made friends with some yorkies that she has met but anything else forget it , she tries to snap at them which does not bode well for a good outcome but we are working on this.
I think you are doing well and if it is only this room maybe you could try a little meetup elsewhere with the class participants. Good luck.
__________________  From Julie  Alfie  & Lottie |