Young Adult Revisited

Since the twins don't go to Paris until high school, this book must be some random fantasy. They sign up for some weird program where they get to spend spring break in France with a local family. Steven whines a little because he thinks it's unfair that they get to do something cool and he gets stuck at home. The day before they leave, they get a letter in the mail that says the family had to leave to take care of their grandma but they found a replacement family. Since no one else from any other school is doing the program, the twins fly across the world by themselves. Elizabeth starts going through the colors and translating them into French, but she forgets the word for black before falling asleep. Jessica makes friends with the flight attendant, who starts to tell her a story about a young girl who flew with her earlier before getting distracted by another passenger. No worries though because she finds an article about in an in-flight magazine. It talks abo