I think the mean mother has something seriously, psychologically wrong with her. I wonder if she's been evaluated for some mental disorders. Her flat affect, inappropriate laughing, etc... all point to some larger problem. I hope she finds the help she needs, but I bet this show will only make her condition worse.
I guess the next show will reveal more. I hope she can find a way to learn something from the experience. Even the most ridiculous people usually take something away from it. If she doesn't, I think that's a clue that she needs professional help. I can't believe there are such narrow-minded people in the world. Being ignorant of another's way of life is one thing, but the inability to at least show some sort of understanding (even if she disagrees) is way off to me. She doesn't even claim to be that way for religious reasons... she's just that way because she is hateful!
Hopefully, she has some reason for being that way, such as a psychological disorder... but if not, I am scared for her children. I am scared for her children either way, actually. Such a sad situation.