He is in Cali so I would stick with the Hammer Hunters as mentioned before. In my opinion I would bet she would take a small amount of recoil over a large amount of noise. Let her shoot some lighter bullets before you do anything to the rifle. I still recommend the trigger replacement.
Missed the California requirement, 110 and 130 grain TTSX are light on the shoulder as well. The HACT 2 stage trigger in my daughter's Howa is a really nice trigger. If the OP's rifle has one I don't know if I'd shop a replacement.
Man that's a real nice buck! I'd really be proud of her, as I'm sure you are! Glad to see you bringing her up right!
Thank you, she has been hunting deer since she has been nine. She has a couple pronghorn under her belt and this year hopefully a muzzle loader bull elk. You're right I'm pretty proud of her.