More about Gisela and Sophie mailing leaflets
I also knew that it would be completely useless and futile to try to convince Hans Scholl not to distribute the leaflets. Therefore I did not try to argue my viewpoint.
That is also why I did not object when Sophie Scholl took the leaflets to be mailed. When I helped her put the leaflets in the mailbox, I thought it simply had to take its course. I thought there was nothing else I could do.
I must admit that I placed half the letters in the mailbox myself. We certainly did not discuss the content of the letters. But I was convinced that Sophie Scholl assumed that I knew about the content of the leaflets. It was equally clear to me that Sophie Scholl knew the leaflets.
Source: April 1, 1943 interrogation of Gisela Schertling