That's what I said - vertically 10, 7, 4, M, B or maybe 12, 9, 6, 3, L .. then "door hold" which is timed for a fixed number of seconds before it shuts and the lift starts to descend, hence the different colour (orange) of the lift lobby at the end of the video. If Elisa thought she was being followed by security staff because she had opened the rooftop security door and set off an alarm, then it might have been an attempt to delay their approach. On the other hand she just might have been playing hide-and-seek with an imaginary partner. At first when she steps out of the lift it looks like she's counting down with her arms, then shortly after begins to bend back the fingers of her left hand to "crack" them. Her right knee bends with the effort. But I think she was just hallucinating though, talking to an imaginary friend, perhaps through missing her medication. She seems obsessed with getting onto rooftops... there's an earlier photo on her blog taken from the roof of a high building in Canada, and of course the picture of two rooftop dancers above.
Not sure what the panel above is, unless it had keyed buttons for staff/emergency use only.
