Modern lakewood guy,
I so agree with you and have learned since I was a child “girls can be mean” As an adult I have realized women are even more mean and obnoxious to other women.
The shaitel issue and price has become out of hand the past few years. Many women in my neighborhhod will spend the $3000 on a human hair shaitel and then ask for tuition breaks or take gov’t funding for food and housing.
A womans hair should be covered.
It didn’t say with what or specify “what can or can not be worn Shabbat to cover your hair.
I have been told may times in my life “I don’t look shabosdik b/c of….” One of the most ridiculous comments made to me was “what’s the matter you don’t own a Shabbos robe?” My answer back was I prefer to get dressed and not look like a hospital patient on Shabbat.
I would tell your wife to just brush the comment off b/c the other woman is just vain or come back with a clever comeback.
Your wife is following the rules 100%-probably even more b/c she is being a true modest woman.
PS- I don’t own a shaitel.