One day last summer, Real Housewives of Orange County’s Heather Dubrow was busy running around and coordinating schedules for her husband of 22 years, Terry, and their four kids: son Nick and his twin sister, Max, 18, and daughters Kat, 15, and Coco, 11. So when Kat texted some big news, it nearly went unnoticed. “Kat decided to drop in our family group text, ‘By the way, I’m a lesbian,’” Heather recalls. “I didn’t see it, and I was mad because the dogs pooped in the house, so I wrote back, ‘Who let the dogs poop in the house?’ It was a total mom fail, and they’ve never let me forget that.”
This wasn’t the family’s first experience with one of its members coming out. Oldest daughter Max, who will…