Can you get her to sulk again?
Seriously though, the composition is fantastic (for me). But as said, if the focus was on the flowers, leaving the face even more out of focus, then even better.
What it says to me (subject to change without prior notification) - cheerful headband, so why the so sad face. Love the contrast there. Also love the soft skin, further enhanced by the OOF blur.
You've also cropped out the shoulder straps (almost completely) and that removes them as a distraction. Ditto the cropping to remove other distractions (nothing negative intended to your wife
).
Potentially a great shot.
Graham