I have a sony a6000, a Nikon D90, and a Canon 6d. If I needed to choose just one, it would be the a6000. The biggest downside is the electronic viewfinder is nowhere near as good as an optical viewfinder (dslr) and the Sony lenses are expensive and not as many options. I would recommend you get your wife a Canon T6 or T6i. Lots of good affordable lenses. Same goes for a Nikon Dxxx series. Cannot go wrong.