Board Thread:General Discussion/@comment-6986530-20171111052140/@comment-66.139.155.126-20171124193821

Mothy also put in that the gender has to match the body or else magic and things like that don't work, up to and including the soul rejecting the body, IIRC. So Michaela being able to use magic indicates something is right in that combination. It's why Gallerian wasn't a valid host for one of Ma's souls, and it's why Irina can't do much magic-wise when leeching off of her male subordinate, and it's why Ma used Lilith and even talks about souls, gender and bodies there.

So by Mothy's own rules, there's something there, unless Michaela violates these rules.