Because the son hunting in the wood had seen Melissa holding court and terminating a Rogue. So they had followed the son and in the interests of not having any witness's had decided to eliminate the son and all those that he might have told.<br/><br/>When William and his men turned up she suspected that they may have received a message or maybe not. But Melissa always worked on the principle you kill everyone then you are certain that the Veil has not been lifted.