as much as i love this, it's (kind of) incorrect.
banshees are shape-shifting malicious spirits who take the form of women.
they don't scream, but keen. (irish women keen, or weep and wail at funerals) if you hear the keen of a banshee, then someone important to you in your life with die, or she's there because someone close to you has died.
so the forced to scream part was a tiny bit incorrect.
hope this was educational, and this was not meant as an insult or mean critique!