She is part of a fictional species.
This fictional species does not need to abide by real-world biology or physics unless a writer deems this is a necessity.
This fictional species is not a real-world ethnic or racial homo sapiens group; they are not a "racist invention".
This fictional species does not need to be altered via real-world protest because of real-world concerns over "unrealistic body image"; anyone that develops an eating disorder because of a fictional species has other (more significant) issues to begin with.
If I wasn't clear enough, I want to nip everything in the bud.