Can somebody help with song analysing?

It's written about a girl who is vulnerable, hence the reference angel, but life has dealt her a cruel hand and she's now homeless living on the streets. She's got a heroin addiction hence the pipe ref and the stuck in her daydream is ref to the drug induced state she lives in. She doesn't want to but can't fight her addictions and is forced into prostitution. The worst things in life come free to us is either a ref to her upbringing or the things in life that have happened to her that weren't her fault, or if people seem to tell her that she's just a waster like she just chooses this life at no cost to herself. Not sure about that one, beautiful tragic song. And the cold is ref to her life on the streets and how her life is too desperate fo her to find a way out. Sorry if i've reiterated the other answer in places cause i cant see it as i'm typing! :)