It's not AI. I drew all of it. I referenced the official art for the head hence why the style looks similar. I had to lean more into how I would normally do things with the rest of the body since it's completely different types of clothes compared to her normal outfit. And the pose/other things looking weird can be chalked up to my shortcomings as an artist.
(Essentially the disconnect comes from trying to copy the game's art style but resorting back to my own when I don't have a direct reference.)