Sounds like she's got an office job that is not much different from what programmers do. I once spent 3 minutes in the attic while HVAC guys were replacing my unit. They were hauling/removing through a tiny opening in the ceiling and installing heavy stuff for several hours. And July in the South is not a 'recreational' season.
My point was that the trades don't automatically mean "hauling/removing through a tiny opening in the ceiling and installing heavy stuff for several hours" although they can. She does have to spend a fair bit of time onsite.