I've had book 1 for years but it got packed up and stuck in the shed when I moved out. I got all but 1 of the rest of the series for Christmas so need to pull my finger out.

If she likes those she should try A Knight of the Seven Kingdoms and Fire and Blood. The first one is like a sequel series of short stories. Fire and Blood is the history of the Targaryen rulers since the conquest. He's writing a second book as he had too much material to go in one!