My name is Mina is a very good book for 9 years and older.
these are the characters
Whisper the cat
at the moment at Mina's school Everyone is calling her crazy but she is not. One day in the middle of Mr Henderson's class Mina was so fed up because the loss of her dad she thought about what Mr Henderson was saying about the underworld and about if you go in the underworld if someone in your family has died you can go down (if you are brave enough) and try and find Persephone the king of the Underworld and ask him if your member of family who died will come back she decided to runaway at that very moment to see if she can bring her dad back.