The Titan's Curse (Percy Jackson and the Olympians, #3)

by Rick Riordan

“As I was saying, I will take Phoebe. And I wish Bianca to go.” Bianca looked stunned. “Me? But…I’m so new. I wouldn’t be any good.” “You will do fine,” Zoë insisted. “There is no better way to prove thyself.”

So biancas parent might kill her