(As an aside, calling the Female Changeling by that moniker is getting lame, I need a new name for her, like how I called The Doctor "K-Shmull". Any suggestions? Because if you guys don't come up with anything then I'll just come up with something stupid like F-Change.)
Doctor Oho nicknamed her "War Criminal". Eh, more of a title than a name, so not much better than Female Changling.
Maybe Ms. Jens?