Re: Female shihan, or more accurately...lack thereof?
My sensei happens to be one of the female ASU 6th dans Ledyard Sensei mentioned. She doesn't hold the title of shihan, but I consider her a master teacher.
Some day I hope to be as good an aikidoka as her on the mat, and as good of a human being as her in general. It is a privilege to be her student. That's all that matters to me.