
I popped in to Breitbart yesterday to look at the maga reaction to this, and they are trying to claim that the employee wasn't an employee at all - they think she is secretly an NPR reporter pretending to be an employee so that she could try to block Trump from getting in when he should have been allowed.
Likely the reason the female employee who was assaulted won't press charges is because she would face further humiliation, bullying and doxxing courtesy of the Trump campaign.
I note the same old bullying of women and calling her "crazy" for not allowing vile men to do as they want was employed here.
News reports confirm that she didn't press charges for exactly the reason you said. She's afraid of retribution from Trump supporters.
https://www.independent.co.uk/news/world/americas/us-politics/donald-trump-arlington-national-cemetery-official-controversy-b2603881.html