You know what really throws someone off is start crying, just wail and say and "i thought my quilt was so nice, do the rest of you think it is as awful as she says?" Don't say anything else. OK hard to do, but wouldn't it be fun? What really does work is silence, it makes everyone uncomfortable. Maybe you could ask her to repeat what she said because you didn't hear her, then when she repeats herself just say OH and nothing else. Hope it gets better and others cozy up to you. Some people have been critical all their lives and don't even realize that they are.