The singer insisted that she deserves a spot within the newly-reformed group as she was one of the founding members when the act began in 1997.
"With Atomic Kitten in the pipeline, I saw Jenny Frost saying she's refusing to join the band if I'm in it," Katona wrote in her OK magazine column.
"The thing is, I was the founding member of the band - I remember when I was the only member and for two months I was on my own during auditions when we first chose Liz McLarnon and Heidi Range, then when Heidi left we all chose Natasha Hamilton.
"When I left the band went on to become bigger and better and I watched them with great pride.
"I'm not going to get into a slanging match over the Kittens but Jenny got the opportunity of a lifetime when she took over from me."
Katona added: "They were number one when she joined the band but it was my voice on the record. I'm proud of being a part of Atomic Kitten, they helped me and I helped put them on the map.
"So if the opportunity arose I'd love to get on stage with them - I'd be mad not to!"
Meanwhile, Natasha Hamilton has caused a further setback to the Atomic Kitten reunion after refusing to reform the group if there are going to be arguments over the lineup.
Watch the music video for Atomic Kitten's 'Whole Again' below: