I have a Parker Buckshot, 43#, 23" draw and I use Muzzy's. Mine are fixed, 3-blade, 100 grain and PINK. I have killed two hogs and one deer with them. The arrow went all the way through one hog and into the lungs of another and all the way through the deer. I am thinking that is plenty of penetration.
I say, if she is happy with the Muzzy's, let her rip tater chip. If, after this season, she is not happy with the performance, then try something else.