Kids test our buttons don't they? And big Grr to the little boy who taught her the "I'll kill you" phase (hehe, I'm sorry, but you have to laugh, or you'll cry! haha). I promise you it will pass Maybe you could get some picture books and sit down and read with her about the new baby?? "There's a house inside my Mummy" is an AWESOME picture book, I cried first time I read it (hormones), and DD STILL loves to read it!

Hang in there, hopefully this will pass sooner rather than later