I don't think that the girl in the song is neccessarily walking away from her faith. I think it's just about walking away in general. "Home is more a prison now." Meaning, she felt trapped and she felt she needed to leave to reach her full potential. ("Just watch what I will be") I think she still is close to God, just in a different way than when she was "trapped" in her house and all that she was comfortable with.
I don't think that the girl in the song is neccessarily walking away from her faith. I think it's just about walking away in general. "Home is more a prison now." Meaning, she felt trapped and she felt she needed to leave to reach her full potential. ("Just watch what I will be") I think she still is close to God, just in a different way than when she was "trapped" in her house and all that she was comfortable with.