What project does Mr. Weir initiate that reunites Naomi with her mother and younger sister in the novel, Memoirs of a Teenage Amnesiac?

Mr. Weir requires Naomi to really dive into her thoughts and feelings in order to come up with the theme for her class project that is the biggest percentage of her grade. The project is what ultimately reunites Naomi with her mother and allows Naomi to get to know he sister, Chloe.