Petunia Dursley's last words to Harry Potter were, "Good-bye, Harry." She uttered these words as he departed for Hogwarts with Ron and Hermione in the midst of the chaos and destruction surrounding the Battle of Hogwarts.
This poignant farewell marks a significant moment in their complex relationship. It signifies a change in Petunia's attitude towards Harry, demonstrating a flicker of compassion and perhaps even a hint of regret.
While Petunia had consistently mistreated Harry throughout his childhood, this moment suggests a softening of her heart. It's possible that witnessing the horrors of the war and the imminent threat to her own son, Dudley, caused her to reconsider her animosity towards Harry.
This brief farewell, though seemingly simple, carries a lot of weight. It represents a final act of recognition from Petunia, acknowledging Harry as a person deserving of respect and even a touch of affection.
While their relationship was deeply strained, this final moment offers a glimmer of hope, suggesting that even in the face of tragedy, a small spark of humanity could emerge.