The girls with no names / Serena Burdick.

Enhanced descriptions from Syndetics:

INSTANT INTERNATIONAL BESTSELLER

A beautiful tale of hope, courage, and sisterhood--inspired by the real House of Mercy and the girls confined there for daring to break the rules.

Growing up in New York City in the 1910s, Luella and Effie Tildon realize that even as wealthy young women, their freedoms come with limits. But when the sisters discover a shocking secret about their father, Luella, the brazen elder sister, becomes emboldened to do as she pleases. Her rebellion comes with consequences, and one morning Luella is mysteriously gone.

Effie suspects her father has sent Luella to the House of Mercy and hatches a plan to get herself committed to save her sister. But she made a miscalculation, and with no one to believe her story, Effie's own escape seems impossible--unless she can trust an enigmatic girl named Mable. As their fates entwine, Mable and Effie must rely on their tenuous friendship to survive.

Home for Unwanted Girls meets The Dollhouse in this atmospheric, heartwarming story that explores not only the historical House of Mercy, but the lives--and secrets--of the girls who stayed there.

"Burdick has spun a cautionary tale of struggle and survival, love and family -- and above all, the strength of the heart, no matter how broken." -- New York Times Book Review

"Burdick reveals the perils of being a woman in 1913 and exposes the truths of their varying social circles." -- Chicago Tribune