Elsa's reaction to the killing makes no sense.

Elsa's reaction to the killing makes no sense. We don't know how much she knew. Let's assume she thought the camp was full of luxury. She still knew they were imprisoning people.

We don't know whether or not she knew the people were innocent, but either way, it still doesn't make sense.

If she knew they were innocent, why would she have no problem with the imprisonment, but be horrified when she learned they were killing them? I know killing is worse, but she acted like she thought her husband was an angel, and then all of a sudden realised he was a monster.

If she thought they were destroying the country, it makes no sense that she was so devastated they were being killed. Many people are against the death penalty, yet I don't think anyone cries over bad people being executed.

I also wonder how much the grandmother knew. She seemed angry, but not horrified.