I figured he told you that, but what else?

[There's a small, grim smile on his face.]

You got a lot from me, Grace, and it's not going to upset me to know about whatever he said. Even I'm not blind enough to know that Percy tends to tunnel vision on one thing that happens and not on the rest.

[Like the betrayal, though he'll admit that he'd been naive to think that his father would honor the promise without forcing him to swear on the Styx. Plus, he can't blame Percy for it since Luke did it once before.]