[Death by Mirrors]

Damies, I agree with Den here. Critique sure can help you become better in your arts and crafts, but there's also line between being constructive and just trying to bring everything down, and she sounds more like the latter. If you value her friendship otherwise, I'd suggest to talk about your concerns, because some people actually don't mean to be jerks and simply don't realize when they're acting obnoxious. Yet if you're feeling more of an "enough is enough, lady!" vibe, then it won't get better just by tolerating her behaviour a little longer.