Welcome to Country Tough with Brandy Von Holten! Today's guest is Diana Thebo- Markworth! She has been a familiar face at Von Holten Ranch throughout the years. From clinics, to judging, to competing, to getting married....when there's a horse involved, Diana's favorite mount is a MUSTANG. Diana is a gift to every mustang she comes across. Just a friend in general to the breed. Diana works to ensure that all of her mustangs are versatile. You are going to love Diana!