Her parents did not even know their gymnastics-loving daughter had the condition.
But Olivia is not the only child to lose their life to asthma.
According to the latest data for England and Wales, 37 children and teenagers died from the disease in 2014.
The figure has risen over the past five years. But many of these deaths are thought to be preventable.
Lisa vividly remembers the night Olivia died. It was a bitterly cold night, and they were at home in Kent.
Struggling to breathe
Lisa, who is married and has a younger son, told BBC News: “We’d tried so long to have children, and when she came along, it was just a miracle for us.
“Olivia was a really special, beautiful girl.
“That night, she was on all fours on the bed – and struggling to breathe.
“She collapsed onto the floor. I tried CPR [cardiopulmonary resuscitation], but unfortunately it didn’t work.