You are who you surround yourself with, and in Amanda's case, this holds very true. Each day she was restricted by her disease and indulgence in drugs and alcohol. She yearned to be free and the only way to do that was to rid herself of her boyfriend. Ironically, the person to liberate her from her boyfriend was a homeless hitchhiker, who contributed to his final demise.
This film is meant to shine light on the very real disease of being addicted to drugs. We are all humans and make bad decisions; we don't have to let one outlet from life turn into an outlet from living.