Yeah, she's Miraz's wife, and the reason ( well, she had a baby boy) that Miraz could justify getting rid of Caspian since he had his OWN son. I always wondered what happened to her and her son at the end of PC...it was never mentioned.
Now that I think about it, you guys might be too young to remember some of these older actresses, but someone like Bernadette Peters ( with her real red hair LOL that's curly) would make an interesting queen P. With that crazy the queen has, I think her personality might have been just as interesting.