Depending on what one emphasizes, one might settle on a different answer. The novel is easy to simplify as a coming-of-age story with Janie triumphing at the end. She is able to "sit on high" and preach a sermon, as Nanny might have wanted, but this is Janie's story, not her grandmother's. The story she tells (i.e., the novel itself) is not just about power or attaining the things the white community values. Janie's life before Tea Cake was influenced by those values, and she needs to reject them in order to become free.
At the same time, Tea Cake's sickness and death, her having to be the one to shoot him, makes the ending more nuanced than triumph suggests. She does attain her pear-tree moment with Tea Cake, and the wisdom she gains from that will give her comfort. She is independent, and her desire to find a new horizon has been abated. However, the last few pages have a complex element to them. We can celebrate with Janie but also mourn with her. She ends where the novel begins.
Women, we learn in the second paragraph, are not broken when their dreams die. They remember and forget as they choose, and Janie will remember what she doesn't want to forget about Tea Cake and forget what she doesn't want to remember about the storm, Tea Cake's illness, and the racism they encountered after the hurricane. She will wrap herself in the meshes of these memories she chooses. However, Hurston would likely not have included the horrible injustices after the hurricane if she didn't want to blend her ending with complex emotions.