The woman was taken to the Hastings Police Station, where she was processed for drink-driving. She will appear in Hastings District Court on Wednesday, charged with dangerous driving and refusing to give a blood sample. The school-aged child went to school as normal on Wednesday, while the pre-schooler was taken to a family friend's house.
"Police had to go back to the station and get a car seat because the toddler was completely unrestrained," Mr Brown said. "Luckily, there was a family friend who lived nearby [to] look after the toddler."
Mr Brown said police had spoken to all relevant witnesses and had sufficient evidence to take the matter to court. There would be no further charges at this stage.
Senior Constable Andy Clinton said the incident, which had left officers "dumbfounded and angry", was very disturbing in light of publicity for Road Safety Week this week.
Checkpoints had been set up at schools and arterial routes, checking on seatbelt wearing, cellphone use and enforcing the 20km/h speed limit past stationary school buses.