Petunia and Lily

[Christy]

No: HPFGUIDX 103082

So, I've been thinking about Lily and Petunia and the relationship 
that they had. Putting aside whether or not Petunia was a witch or is 
a witch or whatever I was wondering if Petunia's knowledge of the WW 
could have come from another source. Lily.

We don't have any real information about the relationship the girls 
had, but I was thinking that maybe Lily and Petunia had a good 
relationship for a very long time. 

One thing that we know is that by the time the Potter's are killed 
Petunia wants nothing to do with her sister. By the beginning of 
PS/SS that much is clear. Vernon in fact seems afraid to bring Lily 
up.

BUT, we have no idea what caused Petunia to be so resentful. We also 
have no idea what Lily's thoughts on her sister were. Maybe Lily 
hated Petunia as much as Petunia hated Lily. 

Where am I going with this? Well, there's very little canon to 
support anything, but I think that the split in their relationship 
happened after Lily left Hogwarts. What caused it? I could think of 
lots of things that could make sisters angry at one another (I have a 
sister, and there are days when I want to kill her, and I have seen 
rifts like this in other families).

Maybe Petunia got her knowledge from Lily before they were estranged. 
I'm willing to bet that Petunia's anger comes from somewhere that had 
nothing to do with Lily being a witch. At least not directly.

Christy