Lyric discussion by GiosString 

Cover art for Oh Life (There Must Be More) lyrics by Alan Parsons Project, The

While I certainly agree completely with the above comments, I often have felt that perhaps this song was in a way, a sort of plea to everyone to be more aware of those they love. Sometimes those in distress are giving off signs hoping someone they love will notice.

No one heard No one came No angel of mercy Appears to know her name

Did she truly have no friends or relatives? Unlikely. More likely she was sending subtle signs of her dispair and no one noticed. I may be way off, but it does give the song a bit of a positive reason to exist.