It suggests that she did not care about his death.
Explanation:
Mrs. Wright replied in a very strange manner to the question of Mrs. Hale. She laughed and ignored much of the question asked to her. Also, in this excerpt, the word 'cold' symbolizes the fear or hard feelings. Mrs. Wright laughter is symbolic that the emotional attachment was the thing which lacked in the couple's life. She didn't lament the death of her husband rather laughed in a tough tone.
