Isolde Von Carstein

one of the Von Carstein The Children
elf girl who was trapped in the Dungeon
broke into the dungeon, undid magical wards, turned the guards against them, and tried to slay The Overseer because she "thought it would be fun"
was in the dungeon for about 1 month
was being held in High Value Containment
helped get Skitter back to normal after he ate a bunch of magical energy
has red eyes and dark hair; very pale
kind of a genius
as the heir of the Von Carstein family, she is given more freedoms than the other children
sometimes goes too far in order to satisfy her own curiosity or that of her siblings
brought back to Castle Von Carstein
it's a secret that she went missing, as her father (Mannfred Von Carstein) has many enemies