I think I see what your point is now. To that end, I'll say that I do think Hilgya is more committed to Chaos than Evil as an ideal, and that she doesn't seem to kill simply because she enjoys killing and finds it fun, like, say, Thog, Belkar, and Xykon do. But she also has no regard for sapient life, insofar as her first solution to basically every problem as far as we saw was to kill the other person or persons involved. So, definitely Evil, but not committed to doing Evil, if that makes sense.