Agree on both counts. Hilarious and sad. In about year 9 we had an elderly lady for French who the word was had a nervous breakdown. Some of the kids in the class boasted we had caused it. I gave them hell for it, while at the same time by memory couldn't help laughing about it a bit too.
Without knowing more about her, i'd guess those kids are lucky to have such a good teacher. She looks kind, and obviously has a decent sense of humor.