I'm doing a bit of family genealogy and discovered a story about my grandmother's relatives (French Swiss but living in the German part of Switzerland.) Thing is I'm not sure how much of it is true/lost in translation.
Apparently they hid a Jewish family who were later discovered and taken by the German authorities. The community were largely pro Nazi and told on them.
I'm trying to find out what happened to the grand-relatives whose house they were hiding at? Any ideas as to the fate of Swiss citizens who aided Jewish people? Would they have been arrested or punished in any way? Were the Gestapo even allowed to move this way in Switzerland?
How historically accurate is this story?
While I can't answer the legal part of your question in detail, it can be noted that Switzerland did prosecute those who helped illegal Jewish refugees in military tribunals, with jail time and fines being a common punishment. Aimée Stauffer-Stitelmann, a Swiss citizen who smuggled Jewish children from France to Switzerland, was briefly jailed for her actions. I'm more skeptical of the Jewish family in the story being directly given to the Gestapo in Switzerland, as the Swiss authorities would not have approved this violation of sovereignty. More likely, the Jewish refugees would have been apprehended by local Swiss authorities and then deported into the hands of the Gestapo, which is what happened to Hans Weinberg in 1939 (source for his story: https://collections.ushmm.org/search/catalog/irn502649)