I'm probably the only one who feels this way, but, Sandra creeps me out. I've posted before that she always appears icy and devoid of natural human sentiment or feeling in general to my eyes. Kind of spooky, lol. Whether this is a cover-up for sheer terror/nervousness I can't say. Yes, she's a phony, but (in the words of Martin Balsam describing Holly Golightly in Breakfast at Tiffanys) she's a "real phony!"
What initially turned me off Mrs. Bennett was during a St. Patrick's Day show. Sandra was conversing with one of the Irish reps and rather cavalierly told him "You need to keep warm because it rains in Ireland every day". He leaned forward and replied "Well, not every day..." Sandra acted as though she didn't hear his charming and diplomatic correction, but instead continued on in her quietly arrogant manner.