The defining scene in Leila Slimani's "Watch Us Dance" comes near the end. It's the wedding of wealthy Aïcha Belhaj, whose Moroccan family profited during France's 1956 withdrawal from their country.

Moroccan author Leila Slimani arrived on the American literary scene in 2018, when the translation of her Prix Goncourt-winning thriller, “The Perfect Nanny,” became an instant bestseller and critical ...