A thyroid imbalance *facepalm*. I think that really takes the cake for irrational thinking. And she alleges you are being unreasonable.
I don't understand how she can say she didn't insult your wife's family. She pretty much said they weren't as good as she is.
I feel for you. Glad you have your wife as support thru this. Your mom sounds about as unreasonable as my mother in law so I get how impossible it is to have a reasonable conversation with them.
Please continue posting. It's therapeutic for you and for others of us to know we're not alone in dealing with the insanity to JW mind control.