Thanks so much for the feedback.
She just threw up the rest of the treats a few minutes ago,plus some stuff I think was on the carpet at the training center.
I might try the chicken breast or some Cheerios. She has always been kind of neutral about Cheerios but when she sees the others getting treats she might go for it.
The other dogs are all really big so when they leave a piece of treat behind on the carpet it is huge for her when she finds it.
She is hating that she is throwing up and looks so sadly at me when she does and I just keep reassuring her she is not in trouble. I think it has confused her.
I'm afraid she is going to turn into the "cookie monster"