What response did fuhrer give gretel when she boasted and you can speak french too?

This question seems to be referring to the children in the novel "The Diary of Anne Frank."

In the story, Anne Frank (who is known as Anne in the diary) has a sister named Margot, not Gretel. There is no character named Gretel in the novel.

The book does not mention a scene where Anne or Margot boasts about speaking French, and there's no mention of anyone named "Fuhrer" interacting with them.

It's important to remember that Anne's diary is a personal account, and it doesn't cover every detail of her life in the Annex. It's likely that the question is referring to something outside the book.

If you have more context about where you encountered this information, I might be able to help you better.