That's almost exactly the same percentage of white women who voted for Romney, the Mormon, over Barack Obama in 2012.
This election really wasn't all the unusual, despite what everyone seems to be saying. Trump won because he won an uptick in the vote of latino voters and black voters as compared to 2012 and 2008. He did not have a banner year for turnout -- his vote count was actually less than what Romney got, and only about a million or so votes higher than what McCain got. It wasn't really unusual. The white vote, men and women, were basically the same -- leaned Republican, because that's how white men have been voting, and did vote in the last, say 6 elections, or more.
What won Trump the election was the black and latino vote which let him win Florida, and probably Michigan. He didn't get more votes than Hillary did from those Demographics. But what he did do was hold firm on the white vote, men and women, and then got just enough extra from the black and latino voters, with just enough of downtick in enthusiasm for Hillary. He also turned those western counties in Wisconsin (almost exclusively white) from Obama voters to Trump voters, and he did the same in Pennsylvania. In Pennsylvania, he had some small inroads into the black vote in Philly and Pittsburgh, but he swept the rest of the state.
As your article stated - "During the Democratic primaries, millions of women of all ages went for Bernie Sanders - at times in spite of gender, but most assuredly because of his anti-establishment, progressive appeal. And while most Sanders voters came “home” to Clinton in the general election, some did so grudgingly. Others refused." -- so, women in the Democrat party were welcoming a real change, in Sanders, which they did not see in Clinton. Maybe, just maybe, in the general election, women preferred the change offered by Trump to the more of the same offered by Clinton.
“When I was in college, I took a terrorism class. ... The thing that was interesting in the class was every time the professor said ‘Al Qaeda’ his shoulders went up, But you know, it is that you don’t say ‘America’ with an intensity, you don’t say ‘England’ with the intensity. You don’t say ‘the army’ with the intensity,” she continued. “... But you say these names [Al Qaeda] because you want that word to carry weight. You want it to be something.” - Ilhan Omar