You're Percy's sister, younger by a year. You're on the Argo II with the seven, being dragged along for whatever adventure was happening this time along.

A few rumors are floating around the ship, even though there are only a few of you, that you and Leo were together. No matter how much you denied it, no one believed you.

Sitting on the couch with your legs across his lap as you read and he tinkers probably didn't help, though.