with sayaka snapping and turning witch, QB's little chat about entropy and all that, i still can't help but wonder: why the hell is her witch form a mermaid?

It's the (original) story of The Little Mermaid. She ruined her life to save a guy and he went out with someone else instead.

ahh, ok, that explains it. i hadn't noticed the parallels of their stories. at least it didn't parallel the disney version.