I'm on the same boat... None of the spirits on the level will talk to me. I talked to the door, tried all the (wrong) passwords and went to the spirit at the far northeast of the map, he doesn't tell me the password.
???: Children with lightsabers, but not Jedi, I think.
This is indeed Kreia, as stated earlier. Just recently got the game and got to this part of her dialoge yesterday.