He 100% knows. Like he said to Aldo Raine, sometimes things aren't too good to be true. The universe can be very giving one time out of a million.
- He is an excellent detective and would most certainly have family photos. He does not chase her down or fire at her in the opening scene because he is saving her for later. HeHe is actually the most brilliant person in the film.
- He orders her milk and a food containing pig fat. He is, in his mind, further denying her religious freedom.
- Exposing her would comprises the change of venue.
- The smaller venue means less collateral damage. Too much collateral damage would limit the options of the allied forces (all eggs in a smaller basket). He has this information leaked to the actress who he knows is a spy. He is the "all knowing"-knowing" until the last scene. LOL
- He insists she be there to run the projecter. She would be collateral damage.
- His comment about having something to say that he forgot was mentmeant to invoke fear. While he is brilliant, it certainly would take him time to read her responses and determine the best course of action. Her fear of discovery would lead to two responses: fight or flight. She didn't run, so he knows she is going to seek revenge. Her cinimacinema has lots of films that he knows mean very little to her and are very flammable. He was doubling down.