The author talks about her breakout success, health struggles, and what comes next after reaching all your goals at once The sky is threatening rain on an early Wednesday evening, but that hasn’t stopped a line of people from wrapping around a tall brick building in Manhattan’s Chelsea neighborhood. Inside, beside Spotify-branded bookshelves, a recreated locker room, and replica jerseys with Hollander and Rozanov on the back, is a horde of people clutching books. More than 200 people — not including the 155 on the waitlist — reserved tickets to this Spotify audiobook party to catch a glimpse of author Rachel Reid , the brain behind Heated Rivalry , a new-adult LGBTQ hockey romance whose HBO Max adaptation became a runaway hit. As for the author, she’s still trying to figure out how this all happened in the first place.  “It’s still hard to believe,” Reid, 45, tells Rolling Stone. “I knew the show was good and fans of the books would like it.…