"She knows more of love than the poets can say, and her eyes offer something that won't go away"

In this quote, Harry Chapin is explaining a lady who has a deep understanding of love that even the most skilled poets can not fully reveal. Her eyes hold a specific quality that is impossible to neglect and remains long after she is gone. This suggests that she has a powerful existence and her love is something that can not be quickly forgotten. Perhaps she has actually experienced terrific love and distress, giving her an unique point of view on the complexities of love. In general, Chapin is highlighting the depth and effect of this female's love, highlighting its enduring impression on those who experience it.