You've had over six months, Tedd! Why haven't you single-handedly solved this supernatural disaster yet?!
Full disclosure: This twist is, in part, a result of me not being able to choose, either. It's still in character for Susan, though, to be conflicted about going with how she'd like to look and how she does look, so I don't feel guilty about that. Just admitting to the world that if I HAD to choose one form for the Susan fairy, I would totally have trouble deciding, too.
Of course, there's still a chance Susan will favor one over the others or I'll complicate this further somehow, but still.