I just found the site with the French version of Maggie's Monkeys. My year of high school French doesn't allow me to translate (why, why, why was I allowed to get through high school and college with only one year of foreign language?) but I get the gist of it. Il y a des singes dans le frigo, et ceux qui ne les voient pas sont des idiots.
Maggie is Mélanie in this version. It is so much fun to think of French-speaking kids reading my story!