Well Edwin screwed up big time with the neither scroll, and has transformed into a girl. It's amusing watching him and hearing him complain, but I've had enough of it. Is there any way to reverse the spell?

It'll get taken care of after a while.

"This is BAD!"

After some time encounter happens and after that he turns back to his old self. Or, if you somehow miss it, he will be man again at beginning of ToB.

Ok thank you everybody. He was just going on about how I have done nothing to help him, so I was worried that I was missing something obvious.