It worked, too. Katrina's vision swimming for a moment, as skull connected with stone and opponent got vengeance for the wound with blade. An slurring murmer of, "...damned Commie..." As Katrina rapidly squeezed eyes closed before snapping them back open, shaking head in an effort to clear argumentative thoughts.
A second and third crunch was experienced, but survival instinct kicked in, preventing Elizaveta from enacting another. Katrina latching ahold of the blonde's arm and punching out with the other, aiming for where impulse told her the other woman's jaw would be. Or at least, where she hoped it would be. Even a vampire could feel a little drunk with concussion like that.