How do you deal with a middle child?

May be you have to give little extra attention to her without the knowledge of others and talk to her patiently , explaining that she should fall in line.

Im sorry to hear that. When my sister was born, I was about 3 years old. My mother told me that one night, My stress of jealousy exploreded and I got up and drop the hot soup on my mother's feets while she was feeding the my baby sister. She told me now that I felt better and I got use to being older sister after that. Your daughter might be perfectly fine when the baby comes. I hope you have a healthy baby. When are you due?