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, dialog driven, self-examination, long-married couple, stale marriage, existential crisis, impending divorce, sisters relationship, lifelong friendship, shattered reality, multiple marriages, scrutiny of friendship, acerbic alcoholic, upper middle class family, couples as best friends, boundaries of friendship, alcoholic sister, comfortable marriage, one weekend, bitter daughter,