here is my theory...the old lady called him and told him she was divorcing his ass, he was already in a depressed state of mind due to being recently in essence sent to the minor leagues from smackdown to ecw. maybe he knew the future in wwe for him was getting gray. he went home, she said something stupid, he flew into a white rage and strangled her. his kid was crying and benoit couldnt take it anymore, so he put a pillow over his kids head to try to get him to stop and b4 he knew it the kid was dead,. he had no other recourse but to kill himself, being so grief stricken from the whole series of events.