the world would end if she were nice to her sister
Plausible, if her being nicer to her sister is why Harry got the upbringing he did instead of the canon one.
Via: “Lily is nice to Petunia” → “Lily makes Petunia prettier” → “Petunia ends up with Michael and not Vernon” → “Harry learns science instead of ptsd”.
It’s even worse if one believe that Harry is Harry!Mort.
Plausible, if her being nicer to her sister is why Harry got the upbringing he did instead of the canon one.
Via: “Lily is nice to Petunia” → “Lily makes Petunia prettier” → “Petunia ends up with Michael and not Vernon” → “Harry learns science instead of ptsd”.
It’s even worse if one believe that Harry is Harry!Mort.