1) it is not from 'A Portrait in Sound' but rather from a 2024 documentary titled 'Making a Nazi: The George Lincoln Rockwell Story'
2) it was not a Senator's Wife, but an Ambassador's.
The framing sounds pretty nuts, but, we aren't actually privy to the interaction and honestly bloody mattresses and strollers and high chairs under NYC Chabad Lubavitch also sounds insane.
With regard to my profile pic, some wise words from GLR;
Direct source for the quote about the tunnels is 'This Time The World' p232
If I were to guess why no t4 personnel were chosen to perform gassing that had experience with gassing, it would be because THERE WERE NONE.