There have been heated exchanges at the Barr Tribunal between John Carthy's sister, Marie, and Counsel for the Gardaí, John Rogers.
Marie Carthy told the tribunal her brother, John, would still be alive if the Gardaí who came to the scene in Abbeylara were properly trained on how to deal with somebody who was suffering from depression.
Ms Carthy rejected a suggestion her brother was suicidal in the run-up the siege and said she did not find him agitated the weekend before he was shot - despite the fact that he rang her 20 times on one day and tried to speak to her on her mobile phone at 6.30am.
Ms Carthy challenged a suggestion by Mr Rogers that the Gardaí would have allowed her to speak to her brother during the siege.
She said that the Gardaí had brought her to the scene for nothing and had no notion of ever letting her talk to him.
Earlier, Ms Carthy gave the Tribunal chairman the names of two individuals her brother alleged had carried out the burning of a mascot goat.
Under cross-examination from counsel for the Garda Commissioner, she said John told her the names, but asked her not to tell anybody else.
Counsel for the Gardaí asked that she write down the names and hand them into Mr Justice Barr.
The Tribunal chairman told Ms Carthy that he did not propose to disclose the names because they came from a person who is now deceased, but she could write them down and hand them to him if she wished.
Ms Carthy wrote the names on a piece of paper and handed them to the judge.
Under further cross-examination, Ms Carthy denied she was swaying and agitated when she came to the scene on the first night of the siege.
She admitted that she had taken a glass of hot whiskey in a neighbour's house, but said 'one hot whiskey wasn't going to make me drunk'.
