However, at a previous court hearing one judge noted the incident had provoked suicidal thoughts in the man and prompted a six-day stay in Wakari Hospital.
"It's one thing for a person to post bravely about their mental-health issues, it's another to put a photo of their discharge papers on Instagram for the world to see," that judge noted.
Judge John Strettell, in the Dunedin District Court yesterday, said Blair's acts reflected her age and her lack of social awareness.
"It was a significantly mean and harmful thing to him and I sense it was not only a deliberate act but one in which you didn't really think through the consequences," he said.
It was fortunate, the judge said, that there were no irreversible effects of the defendant's offending.
As a result of the Instagram post, Blair pleaded guilty to a charge under the Harmful Digital Communications Act.
She also admitted three counts of wilful damage. Judge Strettell said they appeared to be "a cross between vigilante action and revenge".
On January 22, Blair saw her ex-partner's car outside a Halfway Bush home. She took to the rear of the vehicle with a baseball bat with such venom, she broke the bat, a police summary revealed.
Six months later, the defendant was at it again. She parked up outside a St Kilda address and used her key to gouge several marks into the side of her former friend's ute.
The next day, Blair did the same thing to her ex's car in Mornington.
The total bill for the damage came to $1521.
Blair was sentenced to 150 hours' community work, nine months' supervision and ordered to pay the full reparation amount at $10 a week.
