First, welcome to the site. It is such a great resource for info and a comfort when you need it. Many of us are parents who will never forget the moment you described. The pain is etched in our hearts forever.
Having said that, it does get better. ALthough the cf never goes away, it does take a back seat most of the time. You learn to enjoy your kids instead of thinking "she has cf" when you look at her. My boys are 12 and 16. They are doing well right now, but have had a few rought spots. I am grateful for who they are and for every moment they are with me.
It will get easier, it really will. We'll help as much as we can.
Please let us know how the surgery goes. Take care of yourself too!