04-08-2017, 07:03 PM
You would be correct under normal circumstances. This is different because the end of the world was looming and Adalind is now immune to Nick's blood. He took her powers once but can't take them again. She built the immunity by having Nick's blood in her when she regained her powers. It was also the reason Adalind was able to take away Nick's Grimm. Neither of them have any reason to fear the mixing of their blood anymore.