If I were just perfunctory, you'd only be required to stamp it or check a box. Sigs are required where accountability is critical, such as where the rights of others are at stake. If your superiors' signatures aren't enough to make it legal by themselves, then their sigs should not be enough to persuade you to blindly sign off.
If this were truly unusual, who among us would not be more curious than "usual"- and given the sensitivity and timing, who among us would not be more acutely aware of the need to be very careful about covering all the bases before signing anything "unusual?"
Either it wasn't unusual due to poor management and she did it out of habit ... Or it was unusual, and she decided her allegiance was to her superiors instead of doing her job as a public servant with an eye out for the rights of the citizen ... either way she should expect to be held accountable.
The more of this crap I hear about, the more angry I get when Hannity spews his 99.9% of the FBI are honorable people. They aren’t. One of them gave him his cute little 50-cent lapel pin, and that’s all it took to get him to tell that particular lie every day of the week.