Relationships within the family are dynamic and multifaceted, particularly between sisters. That being said, should parents make it a point to treat their kids equally no matter how different they may seem? or should a set of rules be given to every child based on their manners and personality? The story that follows describes a dissatisfied mother. The original poster is a mother of two girls (OP). The first sister is the picture-perfect child, in contrast to the other sister, who is disobedie…