What is the agreement between Dumbledore and Petunia?

[dan_blakey]

No: HPFGUIDX 140212

Jeffhodapp wrote:
> I was re-reading the Half-Blood Prince and I wonder what effect 
> Dumbledore's death will have on the Dursleys? Petunia blanched at 
> the thought of Harry coming of age. This seemed to be a hint. Was 
> there more damage to Dudley than being doted on? I think he is in for 
> a surprise.
 

Now Dan:

I wondered if the damage inflicted on Dudley is somehow the 
prevention of the surfacing of latent magical ability. Preventing 
him using his natural abilities (or as Vernon would put 
it "abnormalities") is surely a form of damage. Maybe Dudley's name 
was even down on the list for Hogwarts and Petunia persuaded 
Dumbledore not to send them a letter inviting him to the school...

Maybe once the magical contract between Dumbledore and Petunia 
expires on Harry's 17th birthday Dudley will suddenly experience 
bouts of uncontrolled magic like the pre-Hogwarts children. I'm sure 
JKR has said someone in the series will discover magic late in life, 
could it be Dudley? Magic is "in the family" afterall. 

Dan