A little while ago I started a thread on a BBW site, and asked the question whether any of the ladies actually liked leather, and all things black and shiny. Of course, if your look hard enough, you'll find anything. I was much encouraged that some genuinely like fetish wear.
I could ask the same question about domination. With apparently only 5% of the female population truely sadistic, but 15% of the male population masochistic, it's not a surprise that there would be a lot of put-upon ladies out there. (%s are from memory of Kraft-Ebbing's work, and are the extreme end of the scale.)
And anyway, what is a nice girl? One that does what you like? Don't forget this is rather selfish. It never fails to amaze me how many couples forget why they fell in love in the first place.
So, I'm always on the lookout for a nice girl. :-))