"
So let in the morning light and let the darkness fade away
In this particular line she is using the light and darkness as a metaphor to describe her feelings. Her "darkness" is her fear for love and her "light" is the hope she has for herself to potentially let love in. She mentions the light because in the previous line, she describes how she's afraid of love in her dreams, so this line turns around and expressing her true emotions- how although she is afraid of love, she still wants to find it and let it in.