Finely balanced: Sarah Hargaden and Brian Killeen at home in Shankill, Co Dublin,  with their children, Danny,  Beth and Alice.Photograph: Aidan Crawley

SARAH HARGADEN AND BRIAN KILLEENHargaden, who is 41, and Killeen, who is 42, have three children, aged nine, seven and five. They live in Shankill,(...)