Oh, go for it!
You never know when someone will stop performing. There are some concerts I really regret missing, because I thought there would be a next time, and there wasn't. If her performances mean enough to you, it will not be time wasted! It can even be more fun when you travel a long distance.
If it makes you feel less crazy, I once flew across the country to see a punk show.
I knew they would never make it over to this area, so we went to them. It was the best time!