I took Sparkle for a bit last time around and all I could think of is "If she's a girl, why doesn't she have a top on? Is she some kind of Tryine slut or something?" In the end I let her go after only a few levels. My chaotic ninja doesn't play well with others and I'm sure he would have had her for lunch soon anyway.
As a side note, I don't know how many times I've played through the game but for some reason I've never used this chaotic voice before. He's my favorite now. I'm using just a ninja and a bishop and when she dies I love the way he says "She was a Saint, a Saint!" And then "Welcome to Armageddon! <insert twisted laugh> 
Sherrie
I kept thinking Haven't slept yet, why start now?!