SOLVED. Children's WW2 [s]

[Adrienne]

A man helps a family/town during war. He eventually leaves. Years later he is sick and his nurse is the little girl of the family he helped.

[Lobstergirl, au gratin]

When did you read it or when was it published? Picture book or chapter book? Remember the cover?

[Kris]

Adrienne, what are the locations/countries in the book? What are the backgrounds of the main characters?

[Pamela]

Sounds like Tucky Jo and Little Heart by Patricia Polacco. (If it's a picture book, that is.)
Tucky Jo and Little Heart

[Adrienne]

The book was read sometime in the 2000s.

[Adrienne]

That's the book! Thank you everyone.

[Pamela]

You're welcome.