It's all a guessing game as to why she's being more distressingly vocal, and the more she chatters and yells, the more I wish that baby translator that Unky Herb in The Simpsons was developing was actually real.
On a happy note for Sue, Em has begun to say "mum mum mum mum" over and over again. I also swear I heard her say "bubby" or at least "bub bub" on at least one occasion!
Our little Emmers is growing up!