Sure, I don’t know the author’s grandmother, I just know she differs from EA standard.
I dont think you get to decide evil individually, its a culture thing, so a whole society comes to a general agreement of what is good and bad.
Like idk, if your younger sister says that you are evil for not sharing your sweets (she had the same as you, but has eaten them), does that make you evil?
I think you need at least 4 or 5 family’s worth of people in a society to start needing morality as a concept at all, let alone defining evil.
Could you please elaborate?