Mrs Hodkin was one of the abandoned spirits at the train station the Ninth Doctor and Saffron Windrose were trapped on. She ran the tea shop.
She eventually remembered her name. She had a son called Michael. She told the Doctor that The Grimminy-Grew sung about the Sileroon. She wanted to be able to put flowers on her son's grave. He had died in World War II.
Once the Grew was defeated, she was able to go back to her own time and catch her train. (AUDIO: Station to Station)