The 19-year-old won the debut season of the Fox competition in December and has since signed a recording contract with Epic Records, where Reid serves as CEO and chairman.
Speaking to AJ Hammer on Showbiz Tonight, the teenager was asked whether it would be "awkward" working with Reid following some of his "tough criticism" to her throughout the course of the show.
"Not at all because to me, to be honest, I was so happy he was honest with me every week," she replied.
"I would hate for him to say, 'You know, you were great every week' and not say what he was actually feeling and then I don't progress each week or I don't make it through. I'm glad he told me how he was feeling so each week I could use what he said and build and get bigger and bigger."
Amaro, who was mentored by Simon Cowell, won a $5 million recording contract and the chance to appear in a Pepsi Super Bowl commercial when she triumphed on The X Factor's December 22 finale.
She recently said that the outpouring of support from the public is one of the best things to have come out of her X Factor experience, saying: "To get that from so many people that support you on Twitter and so many different places and say, 'We love you, we support you, and we're here for you...'
"That, for me, was a really big part. To see how many fans and supporters I have, and I truly appreciate that."
Amaro has also teased that she plans to surprise fans with her debut album, saying it will have a mix of the big ballads she became known for on The X Factor but also tracks from different genres.
> Read Digital Spy's full X Factor headlines
Watch Melanie Amaro performing 'Listen' below: