Millie Florence Interview with 15-Year-Old Author Millie Florence of Mt. Vernon By Brad Palmer • Apr 8, 2019 millieflorence.com Listen Listening... / 11:47 WSIU's Brad Palmer introduces us to 15-year-old Millie Florence of Mt. Vernon, who has released her 2nd novel. A Mt. Vernon teenager is set to release her second novel. Fifteen-year-old Millie Florence had her first book published when she was 13. The home-schooled teen says writing has been a big part of her life for as long as she can remember.