Taking precautions against fire seems most ideal. Prevention is far more preferable to damage control. "I would be appreciative of one of the potions as well. I've regenerative ones at hand if anyone wishes them." Healing isn't her specialty so keeping a little backup on her seems the prudent thing.

The notion of keeping at range near the ruins is a good one and once potions are rightfully distributed, Vivienne heads that direction to wait for everyone else to begin their onslaught against the creature.