Also, Mokou's head seems to be trying to regrow her body, reproducing the veins first. At least that's what I think she's doing. Immortals are scary when they're raging while their healing from a harmless fatality.
If it's me, I always think that Mokou's body automatically regenerates :v and she can't do anything about it At this rate, if she's still attached to Flandre's wing, she's gonna become one with Flandre. Or maybe she can set herself to flames.