Avigail comes to naval, who is having a major feast and was super drunk. She did not tell him when he was drunk but rather in the morning, because otherwise he would kill her and not be thinking straight. So she did not say anything until morning. She told him the story and then his heart died inside him and he was as hard as stone. He was depressed and physically paralyzed.
. Hashem punished naval after 10 days were up, to give him a chance for teshuvah and so there wouldn’t be mourning for naval when mourning for shmuel.