I asked her if she'd read anything the non-partisan groups who were reviewing the bill had been saying; that most "middle class" people of around $100K annual income won't see any noticeable decrease but possibly an increase

Do you have a link to that? I'm in the $100k range and most of the tax calculators I've used show me saving about $3k a year in taxes. I'm very much against this tax bill (I know rich people are getting a bigger break than me, and I'd gladly pay$3k a year so that poor children in this country can have healthcare), but I think a lot of people will see the extra peanuts in their paycheck each week and see it as a victory.