After falling off a ledge right at the last grimoire in the Fort Brachsenburke, our Sienna was just standing there and our characters kept shouting about how Sienna died. (Literally constantly until we got to the Bridge of Shadows)… and, despite rescuing her, she actually still had the entire DEATH/SKULL over her icon, so no health/ult was visible for her (made it hell to see if she was down too!)
Anyways. We finished up on vet, came to the end screen to over 6 million damage. Was terrifying.