Complex sentence: He takes their son's baby photos and taunts her about her perceived lack of emotions, even about their divorce and their son's death, and then assaults her, douses her in vodka, then burns the photos.
Split into simpler sentences: He takes their son's baby photos and taunts her about her perceived lack of emotions, even about their divorce and their son's death. He then assaults her, douses her in vodka, then burns the photos.