I dont think Melanie is back to be vendictive.. I think she is back to play the game and try to win.. like the rest of the pecker weeds should be. She comes off as being sensible, with a good head on her shoulders.. I guess wisdom really does come with age. I sincerely doubt that Scott would ever have the same conversations/petty arguements with Melanie that he does with Holly. I bet he is kicking his own butt right now because he went for the 'flash' instead of the 'class'