Will she be stuck playing on mediocre teams the rest of her travel career because I do not make enough money? How do you finance such a large bill?
Lothar, I would say that your DD is extremely fortunate to have parents who have found a way for her to play a sport she loves even if you cannot afford the "elite" teams. That is something to be proud of and be very grateful for, not something that you should feel any shame over. When I was young, I tried out for and made an AAU team, but in the end, there was no way for my parents to afford it. Looking back, there is no way they could have, should have, or would have gone into debt so that I could play on an elite team, and I finished out playing in the local rec leagues. I was not going to play ball in college, and there was no athletic career in my future. The lesson I learned was that sometimes you have to look at the bigger picture and make tough choices. That one was a no-brainer.
Find a team that will challenge your DD to get better, and one that she enjoys, and save your money for college or whatever it is your DD (and other kids?) may need to help them in the future.