The second Oracle of Apollo

Clarisse La Rue left her home in Ohio when she was ten, escorted by satyr Gleeson hedge, leaving behind her older brother, in Central City, who she loved above all else. The one who raised her. Years pass, both the Titan and Giant war have passed, and Clarisse hasn't spoken or heard from her brother since she came to Camp, having been a full-time camper on her brother's request so she could be safe from her stepfather, his father, Lewis. Clarisse, or Lisa, decides to hunt down her older brother but before she can leave Rachel issues a prophecy to her. A prophecy about her Older brother. She, Percy Jackson, and Annabeth chase a quest to Central to find her brother, but things are not the same as before, when she finds him she finds he's not the same person she remembers.