Use only ceramic pads. No dust, no noise, last a lot longer. Not cheap though.
My wife rides her left foot on the brake and that has driven me crazy for 32 years. I resign myself that she needs brakes every 40K. My last pickup truck had 180K when I got rid of it and was on its second set of brakes
Buy a stick shift, that will break her of the habit............
Until I got my last car, a 2013 Ford Focus, the last time I drove an automatic was in 1978........For the first month or so I didn't know what to do with my left foot....and I still instinctively put my right hand on the shift lever every time I slow down or accelerate........LOL!