It wasn’t intended to be especially acidic.
I simply think the simplest explanation is the most likely. (That, and I’ve seen how badly people can mangle filling out forms)
Do feel free to assume otherwise, no mater what complexities, mental gymnastics, body double doppelgangers, and physical sleight of hand by unseen actors that may involve.
She made a mistake filling out one line of a form.
Well, now at least we know what's going through your mind.