Be careful how you string Dr. Burton's tape recorded words together (you recorded her talking to you at the gym earlier, right?) on the graph at the virtual library- make sure there aren't gaps in between words, and be sure none of the words are cut off partially, either. "This is Dr. Burton. Open up." I think that's what opens the door to her office. Be sure to zoom in on the office passcode thingee on the door to her office before you play the edited tape, too.
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