petra graham, the daughter of andre and stephanie graham and older sister of charles graham is a 16 year old, second year in high school, who struggles with Algebra 2, hiding her feelings, and admitting that she loves her friend. stephanie graham, a miniatures artist, loves her family very much, and tackles with the relationship between her husband and two kids. as for andre graham, well, he's a psychiatrist basically it's hereditary by ari aster except it's a family drama