Complex sentence: Edna spends most of her time with her close friend Adèle Ratignolle, who cheerily and boisterously reminds Edna of her duties as a wife and mother.
Split into simpler sentences: Edna spends most of her time with her close friend Adèle Ratignolle. Boisteriously and cheerily, Adèle reminds Edna of her duties as a wife and mother.