Answer:
Annabeth gives Percy her magic Yankees cap and he disappears down the aisle, just as the grandmothers are coming after him and his friends. They attack Annabeth and Grover. Invisible Percy tries to stop them by messing with the wheel of the bus. ... The bus explodes right after Percy, Annabeth, and Grover get out of there.Percy, Grover, and Annabeth are terrified by what they've just seen and done. Annabeth is mad at Percy for putting himself in so much danger; if he dies, her opportunity to go on a quest is over. Annabeth tells Percy that the only way to really test your abilities as a hero is to survive in the real, mortal world.He didn't try to persuade Percy (most likely) because he knew that his fatal flaw was loyalty. He knew he couldn't be persuaded and if he survived to be 16 he would remain loyal to the olympians. Therefore he try's to kill him to make sure he isn't the one spoken of in the prophecy.
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