Confrontation with the schoolteacher
I don't understand Charlotte's reaction to the schoolteacher. She acquiesced, knowing she would be fleeing in a day or two. But that still left a collaborator who knew a lot of information.
What I might have done in her place would be to surprise to kill him on the spot. With her training, the details would not have been difficult. Knee him a few times, dash his head against the ground, then choke him. Disposal would have been simple in that remote area -- perhaps bung him down the cliff, or leave him there and walk home.
Consider: he said nobody knew he was there (borne out by his intentions), he was a liability who knew about the Jewish children and who was harbouring them, and he was a collaborator anyway.
(I must admit I haven't seen the entire film, I only posted as I got to that scene. So perhaps the schoolteacher may yet do some mischief that could have been prevented by killing him...)
Any thoughts?