Just had to stop my lurking days (enjoyed this site for a long time already) and wake up to comment.
This is just amazing news, I love this choice! The last recast with catelyn felt for me like a small step for the worse but this more than makes up for that, a giant leap for the better! I kind of liked Tamzin and was already seeing her as Dany but somehow Emilia makes me want to be her bloodrider.