The lop is too long= cut stock and install new grind to fit recoil pad
Cheek won't contact properly= use a comb raising device, like a leather comb piece
I did all this for the wife, then I just carved a stock that fit her properly. Any qualified gunsmith that will work with wood will be able to help you out. Shotgun guys are doing these mods all the time. If I had my time over, get her away from the blr and into a different rifle that fits better from the start.