An Avenger of the Raven Queen
Snow crashed into Skorukh when her airship took a lightning bolt in the envelope striking one of its air valves releasing the fire elemental that was powering the vessel. She is from the other side of the world, the same place the outsiders were from that went to war with the fey.
While in pursuit of a criminal her she became caught in an electrical storm.
With her help the adventurers have come up with a list of ingredients that should cure the plague that has befallen the dragonborn.
Currently she has been relocated to Gen, Dighton staying with religious leaders until they can find a way to send her home.