Christian Klippel
Master Poster
Your reply makes little sense, I close doors that way as well, that is not the question here, do you lock those doors that way, especially doors you have never seen before and could not possibly know if you even have the correct key in your hand, she had several you know, the boys downstairs, the front door takes a different key as well.
As i have written several times: the key-type used for the front door (the cylinder in it, to be correct) is _completely_ different to the type of key used on her door (which has a standard lock commonly used on inside/room doors). One would not even need to look at them to check which is which, just handling it would be sufficient.
Of course it is possible that the boys downstairs had the same style of key. Then it would be two such keys. Note that a wrong key could not even be inserted into the lock at all. Also, it is very common that people leave their keys in the lock, either the front door (if it is theor own flat/house) or in their room door (if it a shared flat). So it is highly likely that the key was already in the lock, on the inside. One would just have to pull it out and insert it in the other side to lock the door from the outside.
Greetings,
Chris