User blog comment:Himeyuka/Reyna and Hylla's past/@comment-4640327-20111209131121

Maybe their mother just offered them to CC as employees in exchange for their safety from the demigod war, or maybe Bellona wanted them to learn with the sorceress some magic or anything because she could see it might be useful for them. If that was the case, both of the sis must have really great unknown powers. Even though, it is hard to guess how much time they spent in the island, or if Percy's getting there was part of the fate Bellona or CC had predicted for Hylla and Reina or if he only screwed their plans up.