When I coached in Iowa, we had girls out for the team every year. None were real successful, but we had one that would have been in line for a varsity spot her senior year had she not tore up her knee in volleyball.
If a girl comes out with the understanding that in the room and in meets, she's not a girl, she's a wrestler. She will do the same things the guys do and will get no concessions for her gender. The ones who really want to wrestle do it.
As for the guys who are too chicken to wrestle them, grow-up; an opponent is an opponent. Shut up and wrestle.