A 68-year-old school bus superviser who was mercilessly bullied by teenage students has said she hopes her tormentor's parents will view the viral video of the abuse and talk to their children about their behaviour.
Earlier this week, a 10-minute mobile phone recording of Karen Klein being verbally taunted was posted on YouTube by one of the students on the bus.
By Thursday morning, it had been viewed over 1.5 million times.
It shows Mrs Klein trying to ignore the insults, swearing and threats being hurled at her from at least four year seven and year eight boys who had gathered around her bus seat.
At one point the relentless abuse makes her cry.
The teenagers taunt her for being "fat" and "sweaty", and ask her where she lives so they can come and damage her property.
One student says that if he stabbed her in the stomach the knife would go through like butter "because it's all f***ing lard".
She told a local ABC affiliate news station that the most hurtful comment came when the bullies said her family should kill themselves.
Her oldest son committed suicide 10 years ago.
In an interview with NBC's Today show on Thursday morning, Mrs Klein said it has taken a "lot of willpower" not to respond to the jeers.
She said: "I'm sure they don't act that way at home, but you never know what they're going to do when they're out of the house."
Mrs Klein is a widow and has worked with the school district in Rochester, New York, for over two decades. She has vowed not to quit her job.
Support has poured in for her from across the country.
She said: "I've got these nice letters, emails, Facebook messages. It's like, wow, there's a whole world out there that I didn't know."
A fundraising website Indiegogo.com has raised more than \$250,000 (£160,000) in donations from well-wishers who want to send Mrs Klein on a dream holiday.
School officials called police when they became aware of the video.
Police have questioned the students allegedly involved, but none have been charged yet. An investigation is ongoing.