It is rude to disobey your family.
Susan is trying to plan out her college career.
Susan wants to pick a major.
Susan knows her mother would like her to be a pre-med major and follows that path.
Susan knows her mother would like her to be a pre-med major and chooses to major in art instead.
Susan pleases her mother and may have a better relationship with her.
Susan's relationship with her mother will be strained.