The Starship National Air Ambulance is a lifeline that transfers critically ill children from any hospital in the country to specialist paediatric care at Starship in Auckland and back home if needed.
The flight is crewed with an intensive care unit to monitor and care for children on board.
In 2018, the service made 183 retrieval missions, six of which were from Whanganui Hospital.
New World supermarkets are supporting the service by running a fundraiser throughout their stores, selling limited edition collectible planes for $3 each.
Carmen said they try to do anything they can to help and support the service and told Indianna why they went into New World and purchased the planes.
"As far as her heart goes, she knows she has a special heart.
"We take each day as it comes and live, and whatever is thrown at us we deal with it."
At 7 years old Indiana has undergone two more open-heart bypass surgeries, one at 3 months old and another at 3 years old.
She will eventually need a heart transplant as the disease has caused hypoplastic left heart syndrome, meaning she does not half of her heart - the left side that is the most important side.
But for now, Indianna is a happy, feisty young girl living in Whanganui, and loving school, her mother said.
"We are so grateful [for the air ambulance] because we know of quite a few babies and younger children with the same congenital heart defect as Indi that haven't made it," Carmen said.