It was learnt that the incident occurred at Obele in Yenagoa Local Government Area of Bayelsa State.
She allegedly stabbed her boyfriend in the stomach during the argument and he died thereafter.
The suspect, who was paraded on Thursday by the Bayelsa State Police Command alongside other suspected criminals in connection with kidnapping, murder, burglary, stealing and vandalism, regretted her action.
Okoli further said one Iniobong Maffat was arrested for allegedly conspiring with his gang members to rob one Mr Nhene Chinedu.
The suspects, according to the CP, allegedly robbed the victim of his company’s Toyota Corolla car loaded with pharmaceutical drugs worth N650, 000 along the Sani Abacha expressway in Yenagoa metropolis.
The CP said the command also arrested one Gigi Christopher, Kingsley Okulolo, Godbless Raymond and Vivian Christopher for alleged burglary and stealing at a shop in Amarata area of the state capital.
According to him, the Items recovered were one locally-made single barrelled gun, one Sumec Firman generator, one Elepaq generator, 43 inch LG TV, 32 inch LG led TV, 24 inch LG TV and an invoice.