What is the plot of the story Secrets by Bernard MacLaverty?

Secrets, by Bernard MacLaverty, tells the story of an unnamed boy's relationship with his proud and secretive Aunt Mary. The story begins introducing the distance between the boy and his dying aunt, and then utilizes flashback to explain the nature of their relationship. The boy recalls sitting in his aunt's lap as a child when she read to him and spending time at her house. One day when he is visiting her, he discovers the letters she had exchanged with the man she loved and reads them; these letters contain the secrets that Aunt Mary hides from her family. When she discovers him reading her letters, she insults him and promises she will remember the violation of her trust until the day she dies. The story then flashes forward again to the time after Mary's death, showing the boy and his mother throwing Mary's correspondences into the fire to protect the privacy she so desired. However, the boy's mother quickly reads through the letters before throwing them into the fire, violating her privacy even in her attempt to protect it.