"I have to live with that guilt because she asked me to help her, and I didn't help her."
Danielle said her daughter started turning blue, and begged her mother for help before she took her final breath. Her devastated family attempted CPR on the front lawn as they waited for help to arrive, but Hope could not be revived.
"[She said], 'Mum I'm dying, mum I can't breathe, mum help me.'"
"To not be able to help her, as a parent that is the hardest thing you can ever go through."
8500 people were taken to hospital due to the storm, making it the most severe case of thunderstorm asthma ever recorded anywhere in the world.
"We intended to get to everyone possible - you call us, we will come," Ambulance Victoria's director of emergency management, Paul Holman, told the show.
"But the need was "unprecedented", with a call for help being made every four seconds during the storm."
Following last night's programme, Asthma Australia issued a statement to people who suffer from asthma and hay fever.
"The thunderstorm asthma event was an unprecedented and tragic episode," it read. "Proactive steps that can be taken to improve management of asthma or hay fever symptoms are to consult a GP, pharmacist or call 1800 ASTHMA."