So, dumb question. Once it gets to 'eat off your face with acid' level how are you supposed to counter it? Besides carpet nuking the entire battlefield I mean. 

As for ignoring it, I think its because it's hard for us to determine what the particular effect of it will be at points, so we can only guess and hope that it's right. Victoire's character sheet only has 'has blood powers', and the GMs have made no mention of it in the past three pages, so we've been left to figure out on our own how it escalates in effectiveness. Which, unsurprisingly, has resulted in us doing what we want to fight an actual battle rather than everyone dying of environmental hazards. 

On the plus side at least Henry won't get Bastion. :P