The 22-month-old was killed after she ran outside and was struck by a car in the family's driveway on Monday.

Her mother, Jacintha McPherson, said she was still coming to terms with the terrible accident that took the life of her beloved daughter Payton.

"I've been on autopilot," McPherson said.

"I'm just in survival mode and supporting everyone at the moment.

"How are you expected to get over it?"

NSW Police said inquiries were ongoing.

McPherson said the family was still in shock and has called the incident a "tragic accident".

"It was just an accident, kids being kids, and no-one's to blame, it's no one's fault," she said.

Her family have banded together to remember the toddler, who brought "joy" and "love" into their lives.

"There were people that decided to have their own opinion without knowing the circumstances surrounding what actually happened, making judgments, and they judged," said John Ryan, Payton's grandfather.

Her family is now banding together, to remember Payton and the joy she brought to their lives.

"Typical two-year-old, full of life, full of beans, full of love, the attitude.

"The memory of our baby girl is important, and you know, trying to give her the send-off that she deserves is what's important."

McPherson said she has praised the work of emergency services.

"I can't thank the police and ambulance and all the doctors that turned up on Monday, it was a shock to all of them, it really was, and they handled themselves so well and they provided everyone with so much support," she said.

"They didn't know her. They didn't have to, but they treated her with so much respect and dignity and that's all a mum can ask for."

Friends have set up a crowdfunding page to support the family.