findecino
Do you know which story it is that Petunia becomes nice? Harry asks her is roles were reversed and her and Vernon died would his mum have treated Dudley the way she treats him. It sparks a change in her and she starts to treat him like she should have been all along.
In_Every_Fandom_Girl
@findecino Oof, sadly I haven't come across any fics about Petunia being nice, sorry. Though if I find any, I'll happily tell you. :>