Character: Petunia Dursley
Prompt: Baseless
She just can't help herself. Every time she sees the boy, looks at her nephew, a jealous, infuriated sort of rage bubbles up inside her. She wishes, desperately, that she could love him, that she could give him all the things that a little boy deserves to grow up with…but she can't.
As much as she despised Lily during their childhood, as much as she hated that awful Severus boy that always snuck through the fence in their back garden, all that time, a piece of Petunia was crying out for her sister's attention. All she ever wanted from their relationship was attention, a bit of love thrown her way by Lily. But it was never enough. She was never enough.
And now whenever she looks at Harry, all she sees is a boy born with all the gifts that she's desperately wished for her entire life. He was just given magic, was handed Lily's affection on a silver platter as though it wasn't something that Petunia had worked for her entire life and never gotten.
So yes, of course she understands that her rationale for being so despicable to the young boy is entirely baseless. There's nothing wrong with magic on the surface; Harry can't help that he was born this way; it isn't his fault that there's a piece of wonder and joy in him that Petunia will never be able to experience. He cannot be blamed for any of this. Nonetheless, though, Petunia desperately wants to make him feel as miserable as she was her entire childhood, no matter how loathsome and abhorrent that makes her.