A week ago today, I was riding across the rocky hills of Texas on a beautiful Appaloosa mare named Dee Dee. The sky was wide and endless. The cypress-lined vistas were peaceful. Dee Dee was a sweet and steady girl. I grew up riding horses, even competitively. Still, it had been at least 30 years since I’d been on a horse. I wondered if I’d remember what to do. But the moment I climbed into that saddle, it all came back to me. The southern…