It sounds like you're being surprised that anybody doesn't know about it, even if they're in a risky position themselves, which seems disingenuous.
Before today, what was the most likely path to this knowledge? As in one month ago...and how many 26 year olds have occasion to learn themselves the details of printers? Nobody uses printers.
Yes, working in that position it would be more likely, but she still could merely be a corner case when it comes to laser printer dot awareness, even within the IC.