User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-10750309-20130718140216/@comment-6068707-20130718191216

He might be interested in her in another way. Like oh how many things have you foreseen, and how does your prophecy reading come to you! But I highly, doubt Octaivian would like her. I mean even if she is the oracle she is still a Greek, and Octavian is stubborn about Greeks. So I don't see it coming.

But it could be the other way around, Rachel wanting to understand more about him. She could've probably foreseen the invasion of Camp even before the heroes left to pick up Percy and the others? Who knows.