When Lauren is in the warehouse and two thugs come in, she ducks behind some pallets. When the camera is in front of her, she is in a position that she can obviously be seen from the back and thus by the thugs. When the camera is behind her, she cannot be seen.
On the file on Ondine's USB drive that Lauren discovers behind the photo, Ondine has written the address 187 Rue Duval. Being French, Ondine would not have written it in that format, but rather in the French format of rue Duval, 187.