Conversion to fixed shower head?

My wife's side of the shower only has a hand held on a slide bar, with the water supply mid-wall (see pic). What she wants is a fixed shower head (standard height) AND the hand held. What I want, is not to have to tear up the wall to install a water supply for the new fixed head ☹️

I've been googling for days and haven't found a solution, any ideas on how I can add a fixed shower head to this existing configuration without having to re-plumb?

Thanks!