Anyway, it can wait. Ryoko probably isn't on the second floor right now. Maria was at the first gate from 3:57 to 4:02 the night she disappeared and she wasn't there.
Since nobody saw her leave her room the night she disappeared, and since she's too fat to fit through the vent, there are only three possibilities left:
a) She's dead or hiding in her room.
b) She's actually Spidey in a fat suit and is hiding through the vents (not dead).
c) She left her room very late last night (after 4:15) and entered the 2nd floor through the second door.
d) Was killed by Spidey, who found a way to dispose of the body.
I find 'c' to be highly unlikely. She can't have gone to the 2nd floor anytime before 4:15 because 4+ people were there at all times and we would've seen her. If it's 'a' or 'b', we're going to find out today.
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When you have nothing to say, quote yourself ~ Solfadore