A thoughtful expression swept across his face as the old wolf mentally made a few calculations. Honestly what she had already shared really wasn't much, yet it gave him a little glimpse into something he had only recently thought to be a myth. That fact that she turned down the offer of more blood was a sign as well; that Elena was in control of her hunger. Hell most new wolves barely had that level of control, and she was certainly new.
It was the mention of magic that warranted a nod; the man was no stranger to magic at all. Granted he wasn't exactly a fan either, but over the long decades he had seen just what manner of things magic could do.
So lost in thought was he that it took a second to realize what she had asked, but since Deucalion saw no reason to withhold that information the Alpha chimed in honestly. "I control the change, have done so for years. Most Betas and new wolves in particular, are drastically effected by it yet it holds no true sway over me any more."