At first the last two were missed a few times so I went back and opened them up a few degrees (should I not have? I don't know.) and then tried again. Cohen succeeded without incident. The barking came back, but I think this was enthusiasm and not stress. It was also quieted down much more easily, as I don't want to encourage it any more.
Later today I will try to move at least 4 poles outside to test Cohen's understanding of the exercise. There's fresh snow on the ground covering ice which is in turn covering mud, so it's not the most ideal place to practice, but I need to switch up locales to help her generalization.
Class is tonight. I wonder if we're going to be working on weaves. I would be absolutely flabberghasted if Cohen manages to do a line of 6 tonight (gotta keep expectations appropriate -- new location, stressful environment, etc) but I hope...
[Edited to add: Cohen did indeed do the 6 weaves in class!!! HURRAY!!! It took her one try to get them the first time, then did them successfully 3-4 times in a row. We took a break and reapproached them and had a few failed attempts before we had to move on. They're still a tiny bit complicated for her, but I'm totally psyched. By next week she'll have the 6 poles down no problem. Woot!]