What is the author's style in My Year of Meats by Ruth L. Ozeki?

The novel uses two different types of point of view. In the sections of the novel that are narrated by Jane, the point of view is the first person. Jane tells her story as though looking back on the year from a future date. Jane's view is almost like a diary or her own version of a Pillow Book. However, in the sections in which Akiko is the narrator, the point of view is the third person. A reader might argue that Jane is narrating Akiko's story but many of the things that take place in Akiko's story are things that happened before Jane met her.