Aunt Petunia & Hogwarts

[fkilc]

No: HPFGUIDX 88184

--- In HPforGrownups at yahoogroups.com, "justcarol67" <justcarol67 at y...>
wrote:
<snip>
> We're told very plainly in books one and two that Petunia is a Muggle.
> Also JKR has made the point directly in an interview:
> 
>
http://www.the-leaky-cauldron.org/quickquotes/articles/2000/0200-scholastic-chat.htm
>
> Carol

All the interview says is that wizards can be born to muggles....  but
to me at least, it brings up the following question:

At what point do Squibs stop being Squibs and become muggles ?  If
Petunia is the daughter of two Squibs, does she remain a squib, or
does she become a muggle because she can't (or doesn't want to) use
magic ?

Also, at what point does a mudblood stop being a mudblood and becomes
a pureblood ?  If your great-great-great-great parent was a mudblood,
but then the descendants always married into wizarding families, at
what point does your blood become "pure" enough ?

--francois