When Abbie Ferguson was born 16 weeks premature in August, she weighed little more than a tub of butter and her tiny body faced a mammoth battle.
Her birth weight of 670g fell to just 530g, she had a life-threatening bleed on her lungs because they were so underdeveloped and just when doctors thought she was out of the woods, her lungs collapsed.
But after spending her first 133 days of life in King Edward Memorial Hospital without seeing daylight, the four-month-old is finally home, just in time for Christmas Day - which is also her mother's 30th birthday.
For Abbie's parents Joel and Casey, brother Brodie and sister Issabella, it is the first time they have been together as a family.
"It doesn't matter what else Santa brings because this is our present," Mr Ferguson said.
"People talk about 'miracle' babies but she really is ours because so many times we thought we had lost her and she just kept pulling through."
It was not the first premature baby for the couple, with Brodie, 5, born seven weeks early and three-year-old Issabella arriving eight weeks early.
But with her third pregnancy, Mrs Ferguson was admitted to KEMH after her waters broke at just 21 weeks and she and her husband knew it was "not looking good".
Doctors tried to delay the birth and Abbie Louise was born at 24 weeks, one of the most premature babies born at the hospital.
She spent four weeks on a ventilator and after another three months in hospital was discharged last week, able to go home without being on oxygen.