Hazel squinted. "How far?"
"Just over the river and through the woods."
Percy raised an eyebrow. "Seriously? To Grandmother's house we go?"
Frank cleared his throat. "Yeah, anyway.

Part of their problem was Percy. He fought like a demon, whirling through the defender's ranks in a completely unorthodox style, rolling under their feet, slashing with his sword instead of stabbing like a Roman would, whacking campers with the flat of his blade, and generally causing mass panic.

Why would Roman gods want to date Chinese Canadians?

Would Grandmother scold him? Would she say, “Frank! Thank the gods, you've come. I'm surrounded by monsters.”
More likely she'd scold him, or mistake them for intruders and chase them off with a frying pan.

Percy smiled. He knew the stakes were high. He knew this day could go horribly wrong. But he also knew that Annabeth was on that ship.If things went right, this would be the best day of his life.
He threw one arm around Hazel and one arm around Frank.
"Come on," he said. "Let me introduce you to my other family.

[Iris] squeezed his hand. "Don't lose hope, Frank. Rainbows always stand for hope.