Jing-Mei doesn't discover until being an adult, and losing her mother to death, that on the other side of "Pleading Child", the piano piece that she practiced as a child, is "Perfectly Contented", the other half of the same song.
As a "pleading child, she never appreciates her mother's sacrifices. As an adult, Jing-Mei, may not be "perfectly contented", has found her own passion and talent, and lives the American dreams that her mother can't fulfill herself. Jing-Mei understands now, her mother's good intentions, and her persistent hopes for Jing-Mei.