From what you write, it sounds as if maybe she is mostly concerned about the social implications if her friends -- particularly her work friends -- find out that you carry. She's apparently very susceptible to peer pressure.
For that reason, your best long term solution is for you to make friends with couples you meet at the range, or to find women among your existing friends who "allow" their husbands to carry. Better still if some of those people are also teachers.
My personal website: Cornered Cat