My Honest Opinion
I liked the movie. In fact I am a worship leader and my daughter sings with me and it was really personal for us as we watched it on a dad-daughter date. But I want to give my honest opinion.
Here is my honest synopsis. The issues of evil and temptation in stardom were sidestepped and illusive. (Example the Famous TV star that was not really interested in her but just wanted to use her) It was never really established or forthright whereas the issues of faith and conversion were presented in a way that could smash a grasshopper with a cannon.
My point is this, if you want to show the true healing power and restoration of Christianity, you have to really show the damaging and evil of the devil. At no point in the movie did I ever feel that the main actress was in danger or even struggling with evil. She was just less good later in the movie...but still good.