The Glittering Hour by Iona Grey

A wild debutante who doesn't mean to rock the society boat but always does meets the man of her dreams even if those dreams can't be the reality. Selina is one of the "bright young things" who party every night and usually have no memory of it the next morning. Lawrence is a struggling portrait artist whose heart belongs to the camera. Jump ahead ten years and Selina's young daughter is spending time at her upper-crust grandparent's manor home. Their "children should be seen and not heard" attitude and a mean spirited governess is making time stand still until her parents return from a business journey to Southeast Asia. Alice is miserable and lives for secret letters from her mother that give her clues for a treasure hunt that will enlighten Alice about her mother's youth and how Alice came to be. A beautifully written historical novel that pairs a secret love story with a lonely little girl's chance at happiness. Perfect for fans of Kate Morton and Beatriz Williams.