She has at last 3 points in her favor. 1. The safety concern is legit - nobody can tell you which Muslim is going to have sudden Jihad-syndrome from just a non-violent jihad supporter. So, its prudent and reasonable under the circumstances including the threats to enact a protective measure until the threat is identified and neutralized.
2. If this ever gets in front of a normal jury with a good lawyer on her side she would be acquitted. People are in fear of Muslims now.
3. To justify her actions if sued she can open up the Muslim violence problem and use all that evidence in support of self-defense; then it comes down to a determination of reasonableness. And, the last thing Muslim’s want is to have their protective cover and lies removed publicly like that.
I can remember a time when a business, even a private owner business, could post —No shoes, no shirt, no service — and get away with it.
Many could also post — We have the right to refuse service to anyone.
Seems like that was on a distant planet in a universe far, far away.