It could be AI, I'm not arguing against it, but those AI checking sites are total fucking scams. You're literally asking an AI if something is AI. If AI knew what to look for to tell if it's AI, it would know what not to do to make it look like AI.
I used airbrush ai to better the image quality thats why the freckles are different and her top lip is like that is the other photos as well from the set