I am convinced that at some time, somewhere, Molly put the moves on George and he rejected her. Nothing else could explain the vitriol she has towards him.
.... or he just reminds her of ALL the guys over 20+ years who wanted nothing to do with her..... MoMo's convinced she's God's gift, while sensible men, especially men with any options at all, run the opposite way when they see her coming. MoMo hates GW because he reminds her of all that she cannot have, all that her pathetic loser existence is not......