i didn’t see the implication that the dog died - it is told to shut up when its barking offscreen, the mother goes offscreen and seems to shut a door so you cant hear the dog anymore, but it didn’t seem to me like she killed it
35:50 - Anya puts the string down her throat and struggles with it. At this time stamp, she pulls something very thick and black out of her mouth, which has liquid drip with it. Not vomit but might be triggering. So if that doesn’t bother you, then the next time stamp is the actual trigger.
36:08-36:44 - Once she pulls the black gunk from her mouth, she runs to the bathroom. Graphic Audio & Visual all the way until the end timestamp. You can see the expulsion result on the floor in the background until about 37:20.