WoWDB

NPC exists only for the duration of  Children's Week There are Classic and Burning Crusade versions, too, with their own rewards.

The Lich King's cruel reign has inflicted great suffering on all of Northrend's inhabitants, particularly the children. If you are a friend to the Oracles or Frenzyheart Tribe of Sholazar, perhaps you might consider caring for an orphan for a week.

Chat option: Ask about the orphans.[This option is only available if you have accepted either of the quests she offers.]

Clicking the chat option causes a game dialogue box to pop up that reminds players that they can only choose one orphan to help. You can Accept or Cancel.