Originally Posted by Is He Ill
If she was really trying to escape, she would have just went to the lobby.
She could be just trying to get away and not causing a scene. She didn't sense any real danger until she walked out to talk to the suspects and walked in the second time. Now she knows she is in real danger since the doors won't shut. The suspects could be coaxing her; you can tell by her sign language he is probably talking to her and she is responding with the signs of "I don't know" and "visiting a friend."