There are two segments on USSS : one protects the other having to do with finance- money laudering/ counterfeit/ etc. She no doubt was near the Denver Mint. Am betting is part of the financial segment and should have just kept her mouth shut.
Forgot about the money side. What you said is probably true about her being in the finance sector. If that’s the case, she probably would have been no where near Prez Trump, and, like you said, should have kept her mouth shut.