infidelity friendship primal fear black humor based on play or musical family secrets dysfunctional family alcohol abuse divorcee divorced woman tolerance family conflict family home father daughter conflict house guest annoying sister self reflection family crisis suburban modernism houseguest wealthy family irresponsible sister emotional breakdown existential emptiness personal demons hysterical drunks facade emotional instability anxiety self-examination long-married couple stale marriage existential crisis impending divorce sisters relationship lifelong friendship shattered reality multiple marriages scrutiny of friendship acerbic alcoholic couples as best friends boundaries of friendship alcoholic sister comfortable marriage one weekend bitter daughter