Troi: Open the door!
Jack: I will. After Frontier Day. Surely you won't have a problem with that right?
unless of course the darkness surrounding Jack is the path wraiths trying to prevent the door from opening, and the “come find us” voices are the prophets, and Sisko needs to return for frontier day
but didn’t a changeling try to kill Jack back in episode 3ish, and seven had to rescue him?
Well this version of Troi seems to have the ability to perform mind melds which I don't think she had the ability to do so before.
Perhaps using whatever they pulled out of dead Picard’s head - same thing Jack has.