User blog comment:Himeyuka/Reyna and Hylla's past/@comment-4640327-20111209165344/@comment-3146930-20111209202546

Like I said, Roman demigods most likely arrived on the island and shared information before being turned into little pigs. Some of the girls there could have been Amazons themselves. Also, some things in the series seem to be common knowledge (like how even though the Hunters werent introduced until The Titan's Curse, when they arrived at camp it was shown they all knew each other). Also during the Senate meeting at the end of the book, Percy asked if anyone saw the Amazons and Romans working together a week ago, meaning that they may have known each other existed and didnt get along (once again, like the Hunters and Camp Half-Blood campers). Reyna and Hylla could have been approached by Lupa after leaving CC's island or demigods that know they are demigods could be drawn to the camp/Wolf House