When time goes out Enrica goes from her workshop down the stairs to that place where you set the bombs (he he I followed her, and its good thing she doesn't teleport but you actually see her going few seconds before to arrive at time - that was done very good by ubisoft )

P.S. Forgot to tell you that in the end you need to get back to that bomb place (like when in 1st part you had to return to training room) unless you (if you have time) go to Enrica over roof through the window