It's a difficult time of year for survivors of the atomic bombings at Hiroshima and Nagasaki as the August anniversaries inevitably swing around.

For one hibakusha, living thousands of kilometers away in Northern Ireland, it's especially tricky, as her memories of the trauma, her grief at losing her brother and her nostalgia for her homeland after a lifetime living abroad all get stirred up.

Aged 78, Nobuko Pollock knows she is among the last of the survivors and worries that the commemorations — to which she faithfully tunes in on her satellite TV every year — will lessen over time.