I tuned in to part of Andromeda yesterday and saw that Marjorie Monaghan had a pretty substantial part as Rhade's love interest. I didn't catch it all but I think she played a Neitschean devoted to peace.
You got it right. She was Neitzschean pacifist on some asteroid station that was attacked by Magog. It was a pretty dorkass episode, imo. We found out in it that Dylan is a "Paradigm," one of the creators of the Universe. As if the writers hadn't fluffed Dylan's messiah complex enough as it is with him being the chosen one and all that, now they're crediting him with universal creation.