What's a mom to do?

My kids just came home from church camp. It sounds like it was an exciting time. Seagan shared with me that she is not certain that she is supposed to be a teacher. She really thinks that she is supposed to do something with her voice...just not sure what. She went on to share that she really feels like she is supposed to do something for the underprivileged oversees. That makes me proud and scared all at the same time.
It has always been a dream of hers to try out for American Idol. They are holding auditions next weekend in Dallas. That is the closest. I can't get off of work. I told her that if she could find her way down there that she could tryout. I was reading about the auditions and a parent or guardian has to be present. I can't get off of work. I told her that this year may not be a good idea and that we needed to wait. It totally crushed her. I want her to know that I totally support her and her dreams. I am not the one to crush that dream. It was very hard to make that decision. I told her to pray about it. I pray that she has peace with my decision and that it doesn't cause bitter feelings between us. I want to be a good mom. I want her to follow her dreams. I would never forgive myself anyway, if she were to try out and I weren't there to comfort or celebrate with her. What's a mom to do?