Is Petunia Really Muggle?

[Krissy]

No: HPFGUIDX 102967

Katie:
>>My pet theory is that Petunia herself attended Hogwarts, but left 
> early or something like that. I'd like to think that she and Lily 
> both were Muggle-born with magical ability, but where Lily used 
> hers, Petunia disguised and was ashamed of it (perhaps to fit in 
> better with the Muggle world?) It would certainly explain a lot 
> about Petunia's knowledge and attitude; maybe it would explain how 
> she knew Dumbledore?  


One of my theories on Petunia is that she was marked as possibly being
a witch, but maybe she didn't show as much magicical aptitude, whether
by attitude or a genuine lack of skill.

It could explain her extreme bitterness towards her sister, and if
Petunia did indeed receive a letter, or at least a visitor regarding
her abilities, and was then told that she could not attend Hogwarts, I
can see very well where her anger comes from.

There are two things I wonder about Petunia, aside from possible
magical ability; I wonder if she really does love Lily under all that
bitterness, and sometimes I wonder about how much Vernon has
influenced her.

I'm just guessing, but I think Petunia is the oldest. Is she? I don't
think there's any canon to support that, is there? Either way, Vernon
is a nasty person, and it makes me think it's possible he was one of
the reasons for the rift between Lily and Petunia. 

Any thoughts?

~Krissy