You were on a quest with Grover and Annabeth to bring the Master Bolt back to Zeus before the Summer Solstice came along to stop a war between the gods.
Right now you were all on a train leading to Santa Monica. The faint sounds of Grover snoring and the train engine filled the room you were in. You lay there awake unable to fall asleep with the nightmares you get since you were a demigod. Soon enough you found out the Annabeth was awake as well and chatted in hushed voices; careful not to wake up Grover.
You propped yourself up to look at Annabeth while she spoke to you; her silhouette barely visible in the nearly pitch black room. You let her speak and listened to her, making sure that she knew you were listening.
"I started out as a gift to my father." She started, "That's how it works with Athena: you were born from a thought in her mind and then given to a person she feels connected to. For a while I was treated like a gift."