Complained about me to CEO

I've been working at an agency since 10 days and there's this girl who's my superior. I get the work done on time still she rejects it again and again'.she complained that I'm not doing anything on time but I've been doing work well. Yeah there are some setbacks but I'm doing it with my everything. I think the problem is she is an actual bitch. CEO called us today for a meet and i could tell it was about me and indirectly he was pointing out my mistakes. What should i do? Should i tell CEO that she keeps on rejecting my work and keeps giving me actual changes.

Edited: everyone's getting onto me but lemme tell you one thing. I have been doing my work sincerely and i send her my work directly, i tell her to check it but she forgets and at the end of the day she says she forgot to see it. So who's at wrong here? C'mon when i said there are some setbacks. I meant i couldn't do 1-2 tasks only but she always wants me to change things and the thing is the whole office is fed up with her tbh. So it's not me but yeah I'm trying, it's only been 10 days and I don't deny it. I will do my best and i will do things on time but her attitude towards me is something else and she feels the power because she's superior. I am planning to tell things to the CEO when I'll have proof.