Frost

Unusually, Shard was the one who took the decision to adopt this Banescale. She doesn't show it much, but she know that what happened long ago does not reflect on all of their species, and Frost should not be judged for an event in the distant past. Due to their shared element, Frost feels comfortable around Shard. They also share some visual similarities, which helps. Frost essentially sees Shard as a parent now, which Shard, as she always has done, has quietly accepted.
Frost does not have skeletal growths as you would expect. She had to shelter in the bones of a larger dragon, and now wears bones as a kind of gratitude to them, whoever they once were.