Firstly - how wonderful that LIly will have such a close friend and sibling. COngratulations

Kell - hon bigs hugs matie. I know exactly were you are coming from. My boys are 18 months apart and I was so worried about Nikolaus' reaction and my own that I use to be in tears all the time. I should never have worried...Nikolaus was so fasinated by this new little person it wasnt funny.
My next one is due *gulp* in just over 2 weeks and vy will be 16 months like Lily will be when you have your new baby. We keep asking Vy were's the baby and she comes over and kisses my belly. I think younger children have a 6th sences about these things and are alot more adapting then older children. We are planning to involve her with everything we can in relation to our new addition. As hard as it might seem, let them 'help' in their special way, even if you have to clean up afterwards or remove something later...show them love by giving them the love you have. My second son has autisum and I was very worried about his reaction to having Vy, I would be feeding her and giving him a cuddle at the same time, while he was holding her hand (this was as a newborn to).
You'll be amazed how much your darling Lily will take into her stride and how much she loves helping mummy.