In S07E06, Dany sees Jon's stab wounds. She probably realized that Jon was in fact stabbed in the heart but somehow he is still alive. But does she see scars or does she sees that stab wound? Is Jon's wound healing?

If you haven't seen GoT S07E06, please stop reading, as this question has spoilers for you. So as the Night King has resurrected one of Khaleesi's dragon after killing it for his bidding just like other white walkers. I have a question whether it will breathe fire just like before dying? Or as t...