The puff of smoke and dust was over. The items that were burned were completely burnt, and they had also succeeded in eliminating Bela's belongings, which seemed to support the presence of bad luck in Mike's house at this time.
Mike never imagined that there would be things that made many scary events happen, which haunted and created a separate shadow in Nada's head.
Never imagined how his daughter coped with this kind of thing daily. To be sure, Mike could bet that Nada stayed because he had a good reason to stay alive. I don't know if it's about him, or beyond that what makes his daughter excited to live this life.
Now, Mike has finished dousing the burnt residue, leaving only dust and coals. He watered it so that the coals were extinguished and didn't produce continuous smoke.