Thanks for your replies everyone! I emailed the trainer. I guess she tried to talk to this woman after class but couldn't get through to her, she still thinks Nebo is evil.

She agreed that this class wouldn't be fun for us. Soo...she suggested that I come after the other class and do it with just Nebo. Kinda like private lessons. She said that she thought Nebo was actually really good at agility, he just needs to learn how to focus better. She we could do the rest of this 6 week class like that then jump in on another class with more dogs for the next session, there's more classes in the spring.

I think maybe this will work out ok afterall.