I am assuming that you are referring to Jing Mei, the narrator. When Jing Mei does arrive in China, she begins to understand what her mother had gone through. In the other chapters, she remarks how she really doesn't know her mother (a fear that her "Aunties" have with their own daughters). Now she sees her mother the way her mother wished.
She is also accepting her Chinese heritage. In the other chapters, she feels out of place. Now that she is in China and sees how the two cultures, Western and Eastern, have merged. For the first time, she feels like she belongs.