Great points from TPM Reader RS …
I appreciate the cemetery staff member's unfortunately-at-this-point-entirely-reasonable choice not to “press charges” due to the capacity for retaliation. Let's not sugarcoat it: attacking a federal staff member in the efficiency of her tasks is a felony (18 USC 111), complete stop.
And in practically any other scenario, somebody doing that is going to be detained, even if the United States Attorney chooses not to prosecute (or use a misdemeanor). It's not as if there weren't police workers there (consisting of the previous president's own USSS information) who saw the occurrence and would/could have actually acted.
I presume that cemetery management/the Army didn't desire to push the concern anymore than the worker offered the danger of blowback, however that we've reached the point where neither wished to is not an excellent indication.