Grace Livingston Hill 
Through These Fires [EPUB ebook] 

Lexie is orphaned and working her way through college. When her small, quiet home is suddenly invaded by her unpleasant, money-hunting half-sister and her three spoiled children, Lexie learns how to show grace under fire by putting her trust in God. Meanwhile, Lexie’s childhood acquaintance Ben must deal with a different sort of fire as he fights in World War II.