I suppose any human woman can create life. And I understand what you say about the brain. But the brain must also be created; it merely develops on its own. To create a brain a certain way surely must affect what grows inside it.
At any rate, I've said my piece. I am beginning to research the possibility of doing what Raziel asks; to see if only the mundane parts of a soul may be used in a possession. Would you merely like to be kept informed, or are you familiar with the discipline? I have no objection to reporting my findings at regular intervals.