around 20-21 minutes into the movie when she goes out on her walk, she turns from looking at the sky and sees a decaying corpse of a dog with a collar on. it is graphic in nature, very detailed. it is a still shot wirh some dramatic sound cues. the corpse doesn't implu any direct violence though, and is not mangled beyond the natural decay
He tricks her into stripping so he can masturbate under the pretense that it’s for the ritual, but it is a lie so it is unconsensual, but he doesn’t touch her.
Her son is dead at the beginning, but the story of his death is disturbing and sad. The plot of the story also follows the mother grieving this death, so it's brought up a decent amount.