What does Maria tell Bruno about Pavel's past life? In Chapter 13

In Chapter Thirteen, Maria finds Bruno in the kitchen taking bread and cheese to bring to Shmuel. Bruno asks her about Pavel, who had told him that he wasn't really a waiter but was actually a doctor. Maria confirms that Pavel had been a doctor "in another life" (137). Maria agrees to tell Bruno what she knows about Pavel's life before he came to Out-With, but makes him promise not to speak of it to anyone else. The reader doesn't learn what she tells Bruno.