If you un-friend this person, then only your Wife will see her posts. Don't un-friend this person, because you need to see the bullshit she is feeding your Wife. The only thing you can do is calmly educate your Wife so she eventually sees what a mouthy ignorant fool this person is.
There are tons of links to scientific studies done to refute bogus articles like that.
Like this article. or
this article. Let your Wife be in control. Maybe slip her an
article or two about the propaganda some states put out in fear vaping is destroying it's tobacco tax revenue.
How bout an article where States are
ignoring the fact that vaping can
save billions in Medicare & Medicaid costs, because they sold out and issued bonds against future tobacco tax revenue.