Ruth Grutoff is an American missionary who serves as the nurse and headmistress of the orphanage LuLing works at after Precious Auntie’s death. She is a brave, compassionate woman who puts her life on the line to protect the girls who live at her orphanage. LuLing names her only child, Ruth, after Miss Grutoff. During World War Two, the Japanese remove Miss Grutoff from the orphanage and send her to a prisoner-of-war camp. She survives, but the imprisonment takes a toll on her health and necessitates hospitalization in the U.S. Miss Grutoff arranges for her church to sponsor someone to accompany her on her journey back to the U.S., which is how GaoLing is able to travel to the U.S. Sadly, Miss Grutoff dies shortly after returning to the United States.