The Disclosures Tribunal has heard that Garda Keith Harrison's partner told gardaí she was terrified of him and that he threw her out of the house during a row.
In a statement to gardaí, Marissa Simms said that during the argument, Garda Harrison was out of control in rage and she pleaded with him to allow her to stay.
She later withdrew the statement. Garda Harrison disputes the account and says that while there was a disagreement, it was not serious or violent.
The inquiry is investigating contacts between the child and family agency Tusla and gardaí in relation to Garda Harrison.
Ms Simms told gardaí that on the night of 31 March 2013, Mr Harrison was roaring and shouting at her in the car on the way home.
She said he banged the dashboard and she was frightened of him and he was in "a complete out of control in rage".
She said that she went to bed but Garda Harrison woke her and was roaring at her about "getting into the car with the fellas".
Ms Simms said he pulled off the quilt, grabbed her by the arm and told her to get out.
She said she was terrified of him and was trying to reason and plead with him but he pushed her out the door. She then phoned a family friend, Jim Quinn, who came to the house.
Mr Quinn, a self-employed suicide counsellor, gave evidence today that the argument was not as serious as described.
He said it was Garda Harrison who phoned him and that it was a bit of a tiff and was due to alcohol consumed by both of them.
He said that when he arrived, neither had bruising or cuts. Mr Quinn said he drove Ms Simms to her mother's house at her request.
Patrick Marrinan, SC for the Tribunal, suggested to Mr Quinn that his account was at variance with that of Ms Simms, and that there was a very heated argument with violence and Ms Simms was put out of the house in her pyjamas.
Mr Quinn said that nothing like that happened.
The tribunal also heard about the involvement of Ms Simms' uncle and cousin that night. William and Kerry Bogle were in Ms Simms' mother's house in Raphoe when Rita McDermott phoned them saying Ms Simms was walking the streets having been thrown out of her house.
Mr Bogle rang gardaí in Letterkenny at around 2.30am. A recording of the call was played to the tribunal.
Mr Bogle told Garda Ian Oates that Garda Harrison was giving Ms Simms "awful abuse" and that there was children in the house and she was afraid of him.
Ms Bogle told Garda Oates that Garda Harrison was being very aggressive and "slapping her about".
They later drove around looking for her and when they could not find her, they called to gardaí in Letterkenny at around 3am.
Garda Tina Fowley was on duty that night. She recorded that Mr Bogle was intoxicated. She advised them that gardaí were dealing with the issue and a squad car had been dispatched.
Garda Harrison's lawyer, Mark Harty SC, put it to Mr Bogle that he had surmised what was happening on the basis of garbled messages between him and Ms Simms' mother.
Mr Harty said there were no children in the house and that Ms Simms left the house of her own will in the company of a family friend.
Mr Harty said there was no incident that night which led to any act of violence by Garda Harrison and while there was a disagreement, it was not serious.
Garda Oates of Letterkenny station gave evidence that he spoke to Ms Simms that night when she was in the car with Mr Quinn.
He said that she was calm, seemed OK and said she did not wish to make a complaint that night.
This afternoon, the tribunal heard that Ms Simms will dispute some elements of the garda statement, which was later withdrawn, she gave about the row that happened between her and her partner, Garda Harrison in March 2013.
Her lawyer, Hugh Hartnett, told the inquiry that Ms Simms will say there were some inaccuracies in the account and that it was intrusive and unnecessary.
He said she would say that she was not pulled from the bed as relayed in the statement.