Question: In what episode does Henry Mills' biological mother help two children track down their father before they are placed in a foster care system?
Sentence (from "Emma Swan"): In order to successfully create a dark version of Emma, Morrison explained that "In order to build Dark Emma, I've been doing a bunch of research there with some of their mythology books and old fairy tale books and just looking back through the history of swans and the etymology of 'Swan'" and explained that Emma's rate of evolution "challenged [her] on a daily basis".
Relevant evidence: No