It is rude to hang up on your mother.
Tara is on the phone with her mother, and they get into a heated argument over a current issue.
Tara wants to stop talking about the issue.
Tara refuses to discuss the issue further and changes the subject.
Tara presses the end call button because she is so frustrated.
Tara's mother thinks she is rational for moving the discussion along.
Tara's mother thinks she is being rude and has little respect for her.