Did they let you dry fire one in the shop? I doubt if there's really much you could do that wouldn't either make it unsafe/unreliable or cost a good chunk of a new gun price. The manual lists DA at 13.4 pounds and SA at over 6 pounds, and I've shot some that feel even harder than that. If it's the .22 model, it's spec'd at almost 18 pounds DA trigger pull. I don't know what the Bersa is listed as, but the DA trigger on those feels a lot less.
Cylinder & Slide will tune it up for a couple hundred bucks
https://cylinder-slide.com/Item/CSM334 Wolff makes a kit with 4 different reduced power hammer springs that could make it a little lighter. That might be a good place to start if you're going to stick with this pistol.
https://www.midwayusa.com/product/1004168689Muscle memory, "getting used to it", and just breaking it in some, might help. If it's a carry gun for her to protect herself with, the less things to have to worry about or think about if you need it in a hurry the better. If it's not something you think she'll want to deal with, you might just have to see what you can get back out of it and put that toward an easier to use gun.