If that were true why wouldn't she say it? Why can't you produce any quote from her where she says she'd like to get rid of all public education?
I don't even know that she advocated getting rid of public education in Michigan.
You have proven you aren't reasonable at all. You start with a belief, refuse to prevent facts to support it and then say people are unreasonable if they don't share your unsubstantiated belief. #alternativefacts.
Betsy DeVos: Wont dismantle public schools as education secretary The Denver Post
Now lets look at that - she directly says she will not do what you claim AND she says she favors multiple approaches (note privatizing it all is not "multiple" approaches).
But I'm sure your Kreskin-like abilities to divine the real truth are more accurate that what she said directly in the hearings...