Star Tribune Interview & Who's King's Sister?

James Lileks at the Star Tribune a really good interview with King. Interviews like this always leave me with my own set of questions. Like, eh. . . who is Stephen King's sister?
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Here are some of my favorite quotes.
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Lileks: His latest, "Under the Dome," might be described as "The Stand Under Glass." (That good! Really good!
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Lileks: Let's get the obvious stuff out of the way first. No, he's not spooky. Anyone who expects a creepy guy with a ghoulish laugh probably thinks Vincent Price sat around the house in a black cape, casting spells. (What? I did think all of that about Vincent Price. But come on, Stephen King does live in that creepy old house with bats on the fense. What's up with that, HUH?!)
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Lileks: A normal fellow -- except for the part about being one of the most successful authors in human history, the American answer to Dickens. (I can't help it. I say, quite humbly. . . I told you King wa a modern Carlie Dickens! I knew it. Of course, I wasn't the first to say it. . . but what's that matter when bragging? http://talkstephenking.blogspot.com/2009/10/stephen-king-modern-charles-dickens.html
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Lileks: "The success annoyed some critics, who regarded the books as the literary equivalent of a big tub of buttered popcorn." (May I offer a simple, oh so very very humble: I told you so again! http://talkstephenking.blogspot.com/2009/11/i-propose-literary-diet.html)
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King: "If you read 'Under the Dome' closely, you'll see my blind spots. There's a reference to Facebook, but not to Twitter -- that's the Internet I don't understand." (Amen, Mr. King!)
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King: "My sister read it, and said, you know, there's something like this in the Simpsons movie. The whole town is under a dome. At least someone in the book should mention it." (Your sister is a sharp woman. Who is Stephen King's sister? I know I'm reading this right, but what am I missing? Sister in law?)
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http://www.startribune.com/entertainment/books/69918817.html?page=1&c=y