She was in possession of an air rifle for culling unwanted roosters on her property.
About 5pm Niven fired the rifle in the direction of her neighbour's property oblivious that a 15-year-old boy and his associate were working on a vehicle parked outside the other address about 70m away
An air pellet struck the boy in his left side around his rib area.
He felt a sharp sudden pain and was left with red welt but did not require medical treatment, the court heard.
When the victim looked down he saw a damaged air pellet on the ground and when he looked up he saw Niven standing on her deck holding the air rifle.
Niven told police she was shooting at roosters and did not mean to hit the victim.
Her lawyer Phoebe Bromley urged Judge Christopher Harding not to enter a conviction to allow her client to make an application for a discharge without conviction.
Judge Harding told Ms Bromley was being "extremely wishful" given the seriousness of this offending.
The judge remanded Niven on bail for a restorative justice meeting referral and sentencing on November 1.
