User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-170.235.245.55-20130515184452/@comment-3146930-20130516025544

Clarisse was told that she could pick 2 others to go with her, just no one else wanted to go with her. But you can pick any number of demigods, 3 is just the best as picking any more (The Battle of the Labyrinth-The Titan's Curse) is dangerous.