I know you quoted the wrong poster in this last one, but she is going through all the fog and stuff, actually raising the ship and all that. Just the ghost-thing etc is illusions, a way to make the viewer understand that she is "talking" to her father(though she is obviously thinking the whole thing, as in thinking what she says, not thinking the whole event)you see Garrosh and so on as well, all comic illusions for the viewers sake.