Ah, well, hmmm... [She remembers this from lessons at the Academy. But it's still complicated.] Our bodies aren't made of the same thing humans are... it's a spiritual body, made of spiritual matter. I'm what you would probably call a soul.

But our physical appearance changes... well, I guess what I'm trying to say is that our biology is different, and so what affects how I look is different, too.

Sorry, I don't think that was very clear.