Loneliness

Is it real or imaginary?
In cities we are surrounded with people yet we found out from the media that someone out there is lonely.
Old lady, living alone, found dead in apartment. Been dead for three weeks. Neighbour alerted the authority due to foul smell.
How is this possible?
Honestly, I don't have the answer. Yes, we could speculate about the circumstances of the death. But my unanswered questions are where are her families member, her friends and peoples in her daily life that interact with her.
Is it a failure of society or individual?
Government policy that was in place but not enacted and enforced?
Maybe these will go unanswered. A mystery . Just like her life and death.