It was brought up a while back in some of the earlier discussion threads - Edit 1
Before modification by BlackAdder at 13/01/2010 06:48:14 AM
I just think you guys ruined one of the best surprises of the next couple of books.
I just feel like I read a spoiler.
I just feel like I read a spoiler.
Some people wondered how Semi got the a'dam if only Caddy, Sorilea, and Bair knew where it was hidden. And from there, the rest is history
This quote from WH just adds more support to Sorilea = DF.