Coulter confusion

I saw a bit of the Top Villains list compiled from a poll done by the British national reading campaign. At number 3 (following Voldemort and Sauron) is "Mrs. Coulter." My immediate thought was that they meant Ann, but of course she's a *writer* of fiction (more or less), not a character in it, and she isn't Mrs. anybody.
People actually meant the Philip Pullman character from the "His Dark Materials" books.
For the top 20, see:
http://www.bigbadread.co.uk/

For historians' reponses to Ann Coulter's 2003 book "Treason," see:
http://hnn.us/articles/1554.html