I really couldn't stand her on the show. She was so talentless and useless.
Also Cheryl didn't really shade her bad, she admitted she didn't like her but then found a suitable reason to put her through (basically to fill the gaps since Gamu was about to get deported) not sure why Katy is so butthurt, no-one was ever here for her.
Katie was always so pressed. She was constantly in the shadow of Cher. Then 1D and Wagner started getting headlines too which just made her even more irrelevant.
And Cheryl didn't even say anything bad. She actually kind of complimented her, saying that she may not have had the best voice but she was quirky and had charisma and that's why she got through.