George MacDonald 
The Princess and Curdie 

The Princess and Curdie are back in this sequel to The Princess and the Goblin. Princess Irene and Curdie are a year or two older, and must overthrow a set of corrupt ministers who are poisoning Irene’s father, the king. Irene’s grandmother is also back and she gives Curdie a strange gift and a monster called Lina to help him on his quest. A wonderful tale of adventure and courage.