No man, in the game she just wants to play with us, right? it would be like that she can open the doors where the keys are for moving places but that would happen when we got 3 keys
you take the key to room B2 and open it, then you lock the room, don't open things inside the room and hide inside the closet, she'll even go to the window to see you, if she doesn't see you she'll continue her journey