Guys,
Thank you for taking the time to reply. It's the opening of the bolt in the action that is not easy, and the fit of the rifle is certainly working against her; the LOP is too long. I was considering building a "new" Mauser-based light rifle for her. I have a stock that fits her perfectly, that my existing 98 Oberndorf Sporter came out of (it's an original Mauser stock from 1913); it was clearly built for smaller shooters. The LOP may be a large part of the issue, however I also had try a Sako and a Tikka, and the overall effort required to open and cycle the bolt was noticeably less. This may be aided by the lighter weight of the barrels on those actions relative to my Mauser, because the weight balance is so skewed towards the muzzle (causing her to try and manage the weight, making it hard to manipulate the bolt).
I am, and will always remain, a "Mauser guy". Failures with plunger ejectors and Sako's "85" design and the failure to eject spent cases (with and without a scope) keep pointing me back to the M98 design.