Hit me up on yahoo messenger if you want man, i'm around often and i'm considered "A great person to talk to" about anything, especially CF related. I've seen and been through a ton of crap in my life, especially CF related (as im sure others here have as well), and I have a pretty different intraspective way of looking at life. I'm sorry you lost your daughter, that would just absolutely crush me to lose a child, even though i've never felt that bond of being a parent, I can imagine what it must be like. As for "Why do all the wonderful people die young" question. This question is as old as Plato, or older. For some reason in this reality, people who are human cockroaches seem to live forever, and survive everything thrown at them, and those who are pure of spirit, who want to help others and have pure empathy and caring for others, seem to almost always be struck down at a young age. My only answer for this is that those very pure people were sent back here to learn one final lesson that they hadn't learned in their previous lives, and as soon as they learned it, they were taken from us...They were "Old souls", and finally, after many times around, learned that final last part that made them "complete" within the human journey that we all have to take. Those pieces of crap human cockroaches that we seem to have WAY too many of (I personally know many) stick around because they are relatively "Young souls", and have MANY lessons left to learn. Most of those pieces of crap probably go around MANY more times, untill they start learning their lessons and start to become more pure, finally after many lives, with many lessons learned, they learn their final lesson and then in whatever life, they are stricken down also.
I'm not a religious person, but I feel our "lifeforce" has to come from somewhere, and has to go somewhere when we die. Energy is proven to be incapable of being destroyed, it just disipates to somewhere else, or "changes state", like liquid C02 turns to gas, water changes to ice, etc. While there is nothing I can say to truely understand how you are feeling because I have yet to become a parent, after 34 years of thinking, and after about 30 years of deep thinking regarding who we are, why we are here, what everything means, and why those who are so pure and caring die so young and pieces of crap stick around forever, that is my final conclusion, and to me makes the most sense. And if you are religious and believe in god, this conclusion can very well live within your belief structure, just like evolution. "God" (the force of the universe, the creator, whatever overall plan associated with everything in existance, whatever you want to call it), could very well have created evolution + my explained feelings towards reincarnation and our "lessons" we must learn, to work on their own with very little influence from "god".
This general belief helps me deal with things easier, because in the end, we all have a strong need to figure out "Why?" with relation to everything in the human condition. If you want to accept what i've explained, that your daughter was an "old soul", and she was just here for one last lesson, to continue on to whatever ultimate form of existance awaits those who have learned all their "lessons", it would mean that she is now in a MUCH better place, with no binds to her last life besides those souls she shared it with. Other variations of this belief state that everyone you have ever known in any capacity (family, friends, lovers, acquaintances, people you have passing conversations with, etc) are all souls within your "group" that will never go away untill either you or they reach their final lessons. You will never have any less nor anymore people in this group than what you are allotted at the point of your first creation (when you were literally first born into being alive). So your daughter could very well be waiting for you to finish learning your lessons, for you to join her. Just like she is waiting for her sister, her mother, and anyone else. She could very well be in her final ultimate existance with others from her group who learned their final lessons as well.
I hope I might have added a different view, and maybe it has helped you emotionally in some way. If you ever want to talk, im Faust227 on yahoo messenger. I wish you well.