In The Sin Collector, two of the biggest themes are lonliness and family.  Lily lives a life of solitude until she is given this opportunity, this gift, of being with those who understand her, the gift of having a family. 
The bond of family is strong, and Liliana, just like everyone else is forced to fight for it.  She has a great deal of internal struggle with her own lonliness, which has become a habit, and her newfound loves.  I adore the lyrics to this song, and I love the energy of desperate fight behind it. 

I hope you like it too!  Missy Higgins- The Special Two