I'm no expert or anything, but the OP did mention that it was 1:00 am in the morning at the time of negligence.

And although it is said that cannabis is responsible for low short-term memory retention as a side effect, I want to say that the majority of people with regularized sleep schedules will make stupid mistakes at 2:00 am, high or not.

Yeah, you are right about one thing though, it was a contributory factor behind the choice she made.

Don't operate dangerous equipment while under the effects of THC.

Respect the plant. Respect the molecule. Treat it as it's own activity.