Chapter nine begins right after the Tucks have told Winnie that they are immortal. Jesse is very excited to finally have someone to confide in, and acts as though they have a great gift by being immortal. Miles is much more hesitant and serious. Mae decides to take Winnie home with them and knows that Tuck will want to discuss the whole situation with her. Winnie feels very important; for the first time in her life, she is treated as an adult, as someone important, and her thoughts and actions really matter. This is huge for Winnie -- she has been treated this way before. She realizes the Tucks are her friends, and feels a real connection to them. She also realizes the possibilities that the world holds. It is so different than anything she's ever realized before. Unfortunately, the man in yellow has heard the story, and is following the family.
In chapter ten, Winnie arrives at the Tuck's house and meets Angus Tuck. They live in a sort of magical place, with gorgeous pines and a pond that the boys immediately jump into. Once again Winnie feels really special and important, because of the way Tuck greets her. He says that she is the finest thing that has happened in the past eighty years, making her feel like she is significant.
These two chapters really focusing on Winnie's newfound self -- she has always just been a girl, a child, someone who must do as others tell her. She has felt trapped and insignificant. By knowing the Tucks, and their secret, Winnie is important and confident for the first time in her life.