Looks like you have a project on your hands.
Options:
1. Find the softest recoil pad you can.
2. Shorten stock and stack a couple recoil pads?
3. Handload slugs for softer recoil?
4. Combo of something above?
Good luck and I applaud you for doing the right thing by getting a youngster into hunting in a comfortable manner. I've seen too many guys tell their kids to just toughen up and take the recoil when the kids are clearly afraid of the recoil and the recoil is painful to them. Then they climb all over the kid because they don't shoot as well as Dad expects them too. (Fear and flinching will do that to anyone).
Good man you are bowhuntre. I wish you many rewarding hunts with your daughter.