Ophellia, there really isn't an easy counter for her. Cover...paired. Engage her...squee, gunfighter and aim high. Terror...she burns 1 mid card and or stone. Oh, and she can walk 18" and do an amazing amount of damage that can also ignore armor. One of the most underrated models in the game. Ugh
PS - Yeah, Pandora counters her but who doesn't Pandora counter?