On February 7, 2012, Duno's entry for the Lucas Oil Slick Mist 200 was officially changed from the #63 of Sheltra Motorsports to the #33 of Eddie Sharp Racing. Duno ran both the #33 and #6 of Eddie Sharp Racing in the first 5 races of the 2012 season logging a qualifying high of 16th at Daytona and a high finish of 18th at Mobile. She returned to the series when her crew chief at Sheltra & ESR, Dave Leiner Jr started his own team, Dave Leiner Racing. Duno's first race back was Thunderbolt Raceway at New Jersey Motorsports Park. After qualifying 21st, she finished 10th. This marked her first ARCA top 10 finish, won her the CGS Imaging Hard Charger of the Race award and was the highest place by a Venezuelan driver in ARCA history.