What worked for us was me first showing her the beautiful setup and things I could do in my KDE environment. I also explained additional benefits such as how pr

What worked for us was me first showing her the beautiful setup and things I could do in my KDE environment. I also explained additional benefits such as how private the setup is which she has come to value. If she shows interest, be very upfront that it will be different and she must want to learn how to do some things differently. Without that desire, you are on a path of frustration and conflict. Be prepared to do a lot of tech support to help her with things. Only Office might be a better UX for her than Libre Office.