My appendix ruptured in 2001, and I have a 9 inch scar on my belly because of it. Infection caused me to spend a week in the hospital, 3 days of that in ICU. Nothing to mess with to be sure....
Because of the size of my incision, and the fact that at the time we were team truckers, I ended up having to take a week off work, (can't drive on pain meds) and even after that it was dicey for me to drive because my tummy was so sore. Add to that the fact that I don't feel pain like most folks do...
My guess is that she's going to need a week off work at least...tell her not to push it...she'll heal faster if she rests and gives her body what it needs to be able to heal!