Jessi's Wish (The Baby-Sitters Club #48)

When Jessi volunteers to help supervise the Kids Can Do Anything Club, she meets nine-year-old Danielle. Danielle has a beautiful smile and a great sense of humor. But Danielle is no ordinary little girl. She has cancer.
Jessi never met anyone like Danielle before. Even though she is very sick, Danielle is courageous and hopeful. She even has two wishes. The first is to go to Disney World. The second is to graduate from elementary school. Jessi knows she has to be strong for Danielle, and so she makes a very special wish of her own.