When her partner began banging on a door, Victoria McHugh “completely lost control”, repeatedly kicking and punching him.
The man required six staples to a head wound and also suffered two black eyes, and bruising.
McHugh, 30, of Harden Place, appeared at Jedburgh Sheriff Court and admitted assaulting a man at a house in Allars Crescent on February 15.
Procurator fiscal Morag McLintock described the offence as “a domestic matter”.
“He went out to a bar and she was in a neighbouring flat when he returned, so he began knocking at the door,” said the fiscal.
“She immediately went for him and began punching and kicking him.
“He fell to the floor and she continued to kick him, before being pulled off.”
Miss McLintock said the victim was “lying on the ground with blood around him”.
Defence solicitor Matt Patrick said the victim had been banging on the door of a neighbouring property when his client “completely lost control”.
He said the incident followed a previous allegation involving the man.
Mr Patrick said McHugh had overcome drug involvement and was addressing alcohol issues, and had acted “out of character”.
Sheriff Paul Reid fined McHugh £100.