“Sisters define their rivalry in terms of competition for the gold cup of parental love. It is never perceived as a cup which runneth over, rather a finite vessel from which the more one sister drinks, the less is left over for the others.” LeftTermFriendshipDrinkGoldCompetitionCupsFiniteVesselRivalryParentalParental Love Book:Sisters: Shared Histories, Lifelong Ties Source: Sisters: Shared Histories, Lifelong Ties