From "the Magician's Nephew", when the queen was just unfrozen from Polly and Diggory and she shows them the wasteland of Charn. I highly suggest reading the first book in the Narnia series, it was great.
With Gryffindor, she has a warmth to her, but still sharp and flourishing. She has a crown on her head, because a lion is one of the animals that represent heaven and the kingdom of God (Fourth book of Revelation, the lion is one of the beings around the throne)
I know there are like a HUNDRED sets like this, but I just love the concept.