Gah, that long post was for nothing? Well, I have said a few posts before that one that Lupin was planning on exploring some of the abandoned buildings, and he had already given up on finding the Quista by the time he entered. As for the front door issue, Lupin is quite good at picking locks...
To be fair, how about I just delete the part about discovering the button? And maybe the part about Artemis finding the Quistas' scent as well?
But yeah, my intention with that post was to prevent the Quista from completely escaping the clutches of the pursuers (which would happen if they escaped and left for Blackthorn as planned), and since I had mentioned Lupin wanting to explore the abandoned buildings in previous posts, I saw this as a good way to do so. If (and only if) something drastic happens that would further put the Quista in danger of being revealed to the government, then I might completely agree with you and just delete everything except Yamiko's part of my post. I do admit to the second half of my post being rather suspicious, and wasn't even completely sure of whether what I had Lupin do was okay at the time, so I can understand if this has to happen.