Curls and shrugs won’t impact recovery. Curls are in there for elbow health, and shrugs are in there for more posterior chain/upper back work. I’m going to read it as plyo squats, and I know if I did 100 of those in place of shrugs at the end of my top set/widow maker squat day, I would not recover as well. She can always try it and see, but she should try and run it as written first and understand why things are written the way they are.
If your wife’s goals do not mesh with most of monolith, she probably shouldn’t run Monolith. There’s always hundreds o other templates she could run that can be tailored to said needs and goals.