User blog comment:QueenBuffy/Game of Thrones Season 4, Trailer 1 is now Here!/@comment-5014364-20140113023505/@comment-1679409-20140115090202

I think Melisandre is talking to Shireen. It would make sense as Melisandre is the spiritual advisor to Shireen's father. Plus, Melisandre is looking downward when she's talking like you would to a child.