What is the meaning of the line "Both wry with the laboured ease of loss"

Both the author and her mother had fond memories which brought pain with them. The mother laughed when she looked at the photograph of the beach holiday with her cousins but felt a pang of pain remembering that her childhood was gone, and those days could not come back again. For the author, the memory of her mother's laughter when she was presented with the photograph came back again around twelve years after her mother died. She nursed the pain that the loss brought with it but was happy to remember the day she laughed so fondly.