It's not discrimination based on gender but good looks. I don't see that as a protected class. If she were an ugly, fat/ugly chick or just average, she would not be seen as a threat. Don't know if you're a right to work state though.
You have your categories mixed up gblowfish and you ignore other facts relevant to the whole situation.
If it's not race bias with you progs it's gender and guns. Grievance-mongers and victimologists!