With all the skill of a Cluedo detective I have found out who suggested La Fille would be "prettier without her glasses" for her class photo. It was dirty work. La Fille refused to snitch even when offered an amnesty of sweets, ice-cream and lollipops to name the guilty party. Since torture was not an option and dangling her upside down while tickling her feet did not work. I gave up on her. La Fille's teacher was an easy touch; I didn't even have to turn hissy before she fingered the culprit. Under questioning she admitted she had also been surprised to see La Fille was not wearing her spectacles. It was the directrice wot did it, she informed me.
Turns out it was indeed the headmistress in the gymnasium with the camera. Yikes. What do I do now? Perhaps it was a good job I had the weekend to climb down from the ceiling.