Looking for a novel about caring for a child

I recently replayed the mobile game My Child Lebensborn on a long flight and now I’m itching to read a book with the same theme of caring for and protecting a child in a hostile environment. I’m also expecting my first child so maybe the motherly hormones are kicking in.

If you haven’t played the game, I highly recommend. You play the role of an adoptive parent to an abandoned child in post-WWII Norway, and unfortunately the child experiences intense bullying at school because of their parentage.

Any book recommendations are appreciated! Fiction please (although if a memoir is particularly engaging, I would consider it. Maybe)

And honestly, I also read fanfiction so I wouldn’t mind if the recommendation happens to be a fanfic…