No idea, but I don't think that's Lady. Keep in mind this is a reboot, not a sequel. That might be part of the reason why people rage so hard. Waah waah it's not exactly like DMC1 waah waah, etc.
Then again, I'm all weird and crazy and irrationally open-minded. Hell, I even loved Nero in 4, he was fun as hell to play as. I probably enjoyed playing as him more than as Dante, actually.