Here's the Bechdel Test. The work (book, film, play) has:
1. Two or more female characters
2. That speak to each other
3. About something other than a man
(I've heard of this test before, but Scalzi's blog Whatever just reminded me to apply it to my work.)
I panicked for a minute before I remembered that my villain and my hero are both female and talk to each other about all sorts of things (mostly how terrible humans are or aren't).
Whew! I pass!