Mairéad is unsettled by Damien's request that she give a sympathetic statement to the judge on behalf of Mark in Friday's Fair City on RTÉ One and the RTÉ Player.
Damien's brother Mark is awaiting sentencing for killing their sister Laura - and a hostage standoff that saw Mairéad shot.
In Friday's episode, Damien says: "If you can tell them that he's a decent fella and he just took a wrong turn, it could make it better for all of them."
"How could you even suggest that?" replies Mairéad.
Watch what happens next on Friday on RTÉ One and the RTÉ Player at 7:30pm.
Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, Thursdays, and Fridays.
