Why Dumbledore had to die

[Peggy Kern]

No: HPFGUIDX 150888

Renata:
I agree with you totally, but I really wonder how Harry will get more
powerful without Dumbledore, Sirius or Hogwarts.

Peggy speaking now:  
I wonder if perhaps it's not so much about Harry getting more powerful, but
rather realizing the power he has.  Maybe, as his guides and mentors and
friends are gradually being torn away from him, he's learning that he's
stronger than he thinks, and able to take action and make choices for
himself.
Peggy <just thinking as she types>