to GameBoomers, Mooboy2000.
We had someone else here in the past couple of years who was playing this game and was convinced that he had come up against a bug or two in this game but in fact he had not. Not saying that you may not have a genuine glitch but I am saying that this game can be very tricky.
I have no trouble at all getting this game to run in DOSBox without issues so not sure why you are, but I'm glad you got it working with ScummVM.
Anyway, I played this game many years ago and my recollection of it is almost nil. Until someone else comes along who might be able to help, my two suggestions would be to watch a YouTube video of this part of the game you are describing so you can see what is supposed to happen, at any rate.
Also, there are really good hints about the game
here. None of this may solve your problem, but you got to start somewhere.