...I told her I was sorry for ignoring her and said she had the right to be whoever she wanted to be. She kind of went ballistic.

Dark Mist is still bound, meaning it needs Duel Spirits or mobile bodies as conduits for its power. It's arrogant and prideful with a sense of honor, confident in its own abilities, and tends to target ideally beautiful people of either gender - though predominantly female - who have little or no connections to other people, emotionally or romantically. It also learns from its mistakes, so we can probably only exploit any potential weaknesses once.

...That's it? Just being an annoying old guy?