They're humans
They are mutants. But stay far away from X-men/mutant agenda
More involvement with mutant/X-men
Wanda/pietro are mutants. But not her children
Context is king.
X-23's most basic surface level characteristic that any idiot should grasp: Stoicism.
I don't demand that her every minor appearance be a nuance in-depth examination of her character, but is it to much to ask she be written in Archetype?! This is storytelling 101! If you want people to stay invested in a character, you need to, at the bare minimum, write them such a way that they can plausibly be believed to be the same character!