Knowingly answering falsely anything on a DA or DD form is falsifying a government document, a federal offense, DD form 93, block 4, requires you to list spouse name, or otherwise check single, widowed, or divorced. That's record of emergency data, which as you know we have to update quite regularly. If the police were aware of her marital status, they'd know she was likely guilty of a federal crime, and would be required to report that.

I'd hardly call that a technicality either, that's the same form you list who is to receive death benefits, and we have a lot of fraud on those, people claiming to be widow or widowers of dead service-members, especially in the old days. But that's basically justification in of itself to have called the military up about it, everything else not withstanding. Sucks for her, but I really have to wonder why she'd leave her marriage license sitting on a table anyway. She got an honorable discharge, no charges were filed, not really a bad way to go.