when she first posted i also "analyzed" all of this but upon closer look, there's also the coloring and texture of the tank top and the headphone that are going "outside" of the outline (on their respective layer) and are integrated using a Clipping mask, which doesn't seem a normal occurence in AI work-process.
so it's possible that if that black shape of the headphone (that is "weird looking" because one would not just "bake" the "hair separation" in the shape, normally, so it looks like she "extracted" the shape from the final image to make it look like a layer, rather than draw it first) it's possible that it looks like that because there's a rough draft under it (that we can't see) and she outlined the draft with a black shape or something in the final lineart, idk
but yeah tbh the artwork does feel very AI in every sense (even if by looking closely i can't see any typical AI error (most likely would appear in the tattoo at least) so it could just be an uninspired artwork/commission, as her sexual content in general were), and what this account is trying to do seem clearly to be some kind of grifting so it's not like i'm trying to defend