"There was a really loud bang, it was as if someone had set off a cannon. The loudest sound I have ever heard," she said, per The Mirror.
"In a second I looked up and saw Ava in the air, she was flipping. I saw her face, her eyes were closed and she didn't scream."
"I think the impact had knocked her out. She looked like she was asleep. Her head hit the sand first, it made a thud. How am I supposed to get that image out of my head?"
Ava was rushed to hospital but could not be saved. The coroner's report confirmed she died of traumatic head injury.
Tragic details emerged during the inquest, such as the fact Ava had initially wanted to go on a Minions bounce house, but the line was too long, so they made the ill-fated switch to the Bounce About instead.