Oh yeah, sure it was.
More likely the one-off that was caught by her employer, who then would have to go through every single appointment she'd ever recorded to make sure that the patients had actually been seen and weren't still ill, being inappropriately treated or worse, had subsequently died.
I'm trying to think of a job I've done where 'Oh yeah, I was definitely working, here are the [falsified] records to prove it' wouldn't have got me fired for gross professional misconduct. I can't.
Anything from a cleaner being paid to vacuum and mop a floor but setting a Roomba and leaving, saying I was taking calls from claimants I'd spoken to and processed their claim earlier whilst my phone was actually on DND, reckoning I was definitely supervising those teenagers until 5pm when I wasn't paying the slightest bit of attention and told them to just make sure they left at 5pm before the caretaker came round to lock up at 5.10pm, pretending I was busy working when I'd actually run the reports earlier in the day and made up some of the data on attendance, assuming that because they had been seen earlier, they probably hadn't gone over the fence or hidden with their mates or a girlfriend and I could therefore claim that they were definitely in afternoon registration, that those high risk prisoners/patients were definitely alive and well when I saw them (but didn't actually) - falsifying records to hide that I wasn't doing the part of my job I was required to do at that time would have been completely unacceptable in all of them.