You can begin this Side Story by speaking with Meryl, who is found in the graveyard, on top of the hill in Clearbrook. She found a bottle that mentioned she is adopted, confusing her greatly, but she is having trouble bringing this up to her parents. You can find Meryl’s father right outside of the tavern in town, so walk up to him and use either Inquire or Scrutinize to glean some info, Meryl’s Past. Bring this information back to Meryl to complete the quest.