Historic books

Hello everyone,

My friend’s mum recently lent me Lessons in Chemistry, and I loved that book so much. I later learned that she loves historical books, and I wanted to thank her for her hospitality when I visited her.

Does anyone know what kind of book I could recommend to her? She’s already read many well-known historical books and loved titles such as:

— A Gentleman in Moscow — The Reading List — Lilac Girls — The Alice Network

Does anyone have a recommendation for another book she might enjoy that I could gift her? I am German and have read many WWII books, but I noticed she already owns The Book Thief, so I’m looking for something else.

Thank you all so much