A police spokeswoman confirmed a 26-year-old woman had been charged with common assault and would appear in Auckland District Court next week.
She said after making further inquiries into the incident it did not appear to have been random.
"The two parties had previously been involved in a verbal altercation on Belgium St earlier that week.
"Police want to reassure the community and continue to encourage anyone who at any point feels unsafe to contact us," the spokesperson said.
After further questioning by the Herald, Barr admitted there had been an earlier altercation at a dairy where the blonde woman had yelled at her, wanting to fight her. Barr said she had only met the woman briefly before and did not know her friend.
A Herald reader, who came forward with information about the incident, claimed the two women did not have weapons, as claimed by Barr, and that the couple had followed the blonde woman and her friend back to the blonde woman's nearby house and started shouting abuse.
But the couple strongly denied these claims and say the blonde woman walked in front of their car and had wielded a metal pipe while abusing them.
They want more charges laid against the other parties.