I asume you are playing beta 12, right?
in that version I can hear her talk when she finds something, like a dead end. as for the rope, after you climb up to the top, jump left and keep walking until you come to the door. then, kill all the enemies if any, and grab the torch and flip the lever. once you've done, return to where you jumped off from the rope, this time you have to jump to the right if you are still at the top.
keep going right and jump off the small cazam, then keep going to the right until you come to the door.
I'm not going to spoil up the level until the end, so good luck on your journey
I prepare the ship and a laser guns,
Shooting down crusers, lunar lifters, inforcers, hovercraft, liquidators and gorbian ships,
I take my super laser and destroy lord vector himself,
I am the undefeated troopanum troopers! Nobody can't destroy me!