Leave all squad members where they are when you begin the mission. Just take one member and go to the gate and talk to H'done so that she will lead the way into the jungle. When she says "Try to keep up the path leads this way!", she will stop and a message will appear telling you to rally your squad with H'done before she continues. Ignore the message and keep following the path until you reach the first booby trap on the path. Tell you squad to fall in. H'done will still not continue when the other squadmates arrive. Then, just continue with the mission as usual, and do not go back to retrieve H'done. When you reach the temple gate, H'done will suddenly appear behind you as if she followed you the whole way. She will unlock the gate and you will not have to protect her any longer. If you get lost in the jungle without H'done, go to the objectives menu and use the map to find your way.