The accused appeared briefly in the Kaitāia District Court on Monday.
Police have named the man who died from serious injuries in Kaitāia.
He was Arthur James Randy Rhodes Honey Boy Kara Tahere, 22, of Auckland.
A 29-year-old woman has been charged with murder and has been granted interim name suppression.
The accused appeared briefly in Kaitāia District Court yesterdayduring which her name and details were suppressed.
She was remanded in custody and scheduled to appear at the High Court in Whangārei early next month.
Police were called to Kaitāia Hospital about 11.40pm on Saturday. The victim died at hospital from injuries he had suffered before being dropped off.
The suspect, reportedly known to him, was charged on Sunday night with his murder.
Detective Inspector Rhys Johnson of Northland CIB said police were not seeking anyone else in relation to the alleged murder.
The 19-year-old disappeared without her wallet or mobile phone.