Peacefield Skull
The ladder is in fact in the way, seeing as the girl is sort of holding on to it. She's not really holding on to it, since she's insubstantial, but as long as it doesn't get yanked more than her height (4'10") away all at once, she can use it to levitate up, as she's currently doing. The ghost girl waits, to see if they continue pulling the ladder up and let her get close enough to jump at the flame-thrower guy.