'Such a quick recovery... Even my current self can't match it. It would still take me a few minutes to recover that degree of injuries.' He was confused.
Perhaps what Isla had said could be believed, as he himself saw Alice gain powerful recovery abilities after their first night together. This could be an effect of him as Dietrich. But Alice's speed does not match his own.
And his own cannot match this speed.
'As I read several times and have seen it, vampires no longer have immortality, as they must develop it over time, managing to attain it after 150,000 power. Could it be that she developed a new ability because of our union? Or does it have something to do with her being here? No, I'm here too, and I don't have one. I guess she has developed a new ability.' He thought.