The N-Dubz star and fellow panellist Louis Walsh alleged back in October that the 19-year-old had been "mean" to other contestants, an outburst that Misha B and her mentor Kelly Rowland both claimed had hurt her chances in the contest.
However, Contostavlos has now played down the comments and her resulting feud with Rowland, saying that discussing Misha B's actions in the open was the only way to resolve the situation.
"I never had a problem with Kelly in the first place," she told The Sun's TV Buzz. "It was simply about a comment I made which caused a bit of tension. Now that's gone.
"For me it's about what happened behind the scenes as well as on stage. I wasn't lying; it was affecting one of my acts and the week something was said it stopped."
Contostavlos also clashed with Gary Barlow during the series, but said that she still hopes to collaborate with the Take That star in the future.
"I'd love to do a great ballad with Gary, but he's a mysterious character - I never know what he's thinking," she revealed.
Contostavlos previously insisted that the tears she shed when Misha B was voted out last Sunday (December 4) were genuine.