Interesting point, Darxbane. I agree that the confluence of circumstances seems a bit too convenient - perhaps you're right that some or all of those events were influenced by Ruin. However, I think that's a different thing than saying the Inquisitors are totally controlled by Ruin, i.e. dead, which was what I was arguing against.
In response to your question, we haven't seen any female inquisitors, but we (most likely) have seen female hemalurgists, which means that theoretically there could be female inquisitors. The reason there aren't any is likely due to gender discrimination.
Who's discriminating? The Inquistors, because they don't want women amongst them? Or Sanderson, because the Inqs are just too brutal and disgusting to be thought of as female?
I think it's interesting that even as the fantasy genre is developing more heroines, the worst of the bad guys are generally still guys. Of course there are exceptions - Shelob and the female Forsaken come to mind - but I don't know of any female orcs or Uruk-Hai or Black Riders or grolm. It's like monsters are just naturally thought of as male.
Not that I'm objecting to this tendency, I simply find it worth discussing.