The two women at the centre of a dispute that ended with one pinned against a tree by a car were friends and colleagues who had been staying together, a friend says.
Police have charged a 50-year-old Beach Haven woman with wounding with intent to cause grievous bodily harm after she allegedly ran down her 55-year-old friend, injuring her leg.
She will appear in the North Shore District Court on Monday.
The older woman remained in hospital last night following surgery to repair her foot.
A relative of the victim said he could not understand what went wrong between the pair.
"The one who was hurt was staying with [the accused] and helping her out," he said.