The two in the offending vehicle died at the scene, while Genna and Jeremy were taken to Wellington Hospital and remain in a critical condition.
A Givealittle page has been created to raise money for the injured pair, to help pay for food, bills, medicine and rent as they go through a long period of recovery.
Nearly $11,000 has been donated in less than 24 hours.
Brooklyn Kids regional manager Michela Homer said Genna Te Kahika is a much-loved member of the Early Childhood Centre.
While in shock, the teachers were ensuring life remained as normal as possible for the young children taught by Te Kahika.
"They're toddlers so obviously the teachers will try to keep it as stable and calm as possible without upsetting them," she said.
"I have no doubt they'll be making some beautiful cards for her."
Students and teachers were both noticing the absence of Te Kahika, who had worked at the centre for five years.
"The teachers and staff at Brooklyn Kids have nothing but wonderful things to say about her," she said.
"What I saw straightaway once parents were informed was just how much they wanted to support her.
"They are really hoping for a speedy recovery."
The staff had put together the Givealittle page as a way of giving back to Genna, and helping to cover her medical costs.
"Once the parents were informed, the parents and the team really wanted to find a way to support in any way that they could," she said.
"The Givealittle page was set up so the community in Brooklyn could offer something back to Genna."
