Way back there were “junior” brake levers CLB made them and some others. What Art Stump did was weld a U section to the top of the Campagnolo lever for those with small grip capacity.
Campagnolo would not be a good lever, Weinmann probably, but I have filed back the bottom of the lever body on some levers for my son 14 years ago, those were aero levers, and I added inline cyclocross levers with adjustable reach. Bike was sold off years ago and the petite woman who bought that bike was so excited she could safely brake.