The poet’s mother laughed at the snapshot. What did this laugh indicate?

The poet’s mother laughed while recalling a moment of her past captured in the photograph. She looks back at her childhood days with nostalgia and recollects her innocent joys. Looking at the picture years later brings in her mind the fond memories. She laughs at the way they were dressed up for the beach holiday.

But in the midst of these pleasant memories, lies the pain of loss. The pain comes from the acknowledgement that the lovely days of her childhood will never come back to her.