Re: [Harry]
Somewhere around 1 A.M., the number of Dementors suddenly doubled. My daughter was the witch on patrol with Dave assisting. The sudden increase of their power hit her before she could defend herself, and she was overwhelmed.
I got there before they could get past Dave's proto-Patronus, but it was a close thing. She's mostly in shock right now.
We need to be prepared for this possibly happening again tonight. Not her going into shock, but a doubling of their number and power. I don't know that it will, but... I distrust our hosts.
I hate to call on you more than others, but your skill in Occlumency and sheer will power makes you one of the most valuable of our company. Get enough rest, but be ready. You may be needed as backup at some point.