Armando stood with me in the Kansas City International Airport as we waited for Camila to walk down the ramp toward baggage claim. I was practically bouncing with excitement to see my sister. It had been over two months since my wedding, and Camila would be starting classes the beginning of September. Her visit would only be for a few days, and I couldn’t wait.

As strangers passed by, I was self-conscious of the holster beneath my long skirt. I’d spent hours ...