Now, there may already be a thread for this. But meh. :)
Basically I'm guessing that the woman at the end of the game could 'maybe' be Carla.
Firstly, due to the huge cutlass. Her being a sword master and all.
Secondly, she hates Guybrush for repeatly taking her off to Monkey Island and leaving her.
Thirdly, the voice is female.
But yeah, :) Any other guesses are welcome. I've forgotten most of the earlier game plots, so any other guesses are welcome :)
PS: I hate this episodic layout. Why not just release the whole game as one like all the other MI's?