Room of Requirements and the discovery of the DA

[Peggy Kern]

No: HPFGUIDX 167462

Hi, all.  I'm rereading Order of the Phoenix, and noticed something that 
doesn't seem logical to me.  After the first DA meeting, when they left the 
Room of Requirement, it's mentioned that the door turns back into part of 
the wall when they leave.  But after they've been warned by Dobby and they 
all run out of the room, the door is obviously still there, because Pansy 
goes in and finds the list of DA members.  Why didn't the door disappear 
when they left this time?  Also, if Cho's friend was off telling Umbridge 
about the group, didn't they realize she was missing and wonder why?  She 
obviously couldn't have been at the meeting with "sneak" written on her 
face.  Any ideas?

Peggy
http://kernsac.livejournal.com/