Funny it just popped in my mind the reason Granny called Red when the hunters were at the door was to make sure she(Red) was still in the house. Initially I was confused just as Red was, asking myself why did Granny call her into the room? It wasn’t as if Granny was asking her if she wanted to go, makes perfect sense now, Granny was ensuring the safety of her granddaughter by keeping the hunting party at the door and calling out to Red to make sure she was safe inside the house with the cloak on, Anyway enough with that.
As far as David I do not think that he is a werewolf nor do I think that he is/was Graham’s wolf guide. I am thinking similar to some of the theories that were floating around the chat room yesterday. That maybe David was out in the woods looking for clues and he wondered too close to the SB boarder which made him disorientated and eventually he passed out.
Lastly, I think Granny said something about the werewolf abilities fading away and that her sense of smell was left. I took it as if a person is turned into a werewolf, should they live to be of a certain age some of the stronger wolf tendencies go away, or fade with time.