All four replacements, from the Beko League's Netball South team, have been involved in the Steel setup in pre-season or in the premiership.
They are shooters Aliyah Dunn and Olivia Bates - younger sister of national women's cricket star Suzie Bates - and midcourters Dani Gray and Sophie Erwood. Dunn has had court time for the Steel while Gray has warmed the bench.
The bus ended on its side after the collision.
Renowned for her tenaciousness, former Silver Fern Frew was adamant she would be "back on the court in no time".
"It's like a nightmare - it's such an awful, scary experience to be involved in for all of us. But we are a strong team and a strong franchise and we will get through it together. We've just got to look forward."
Frew said members of the public at the scene and the medical staff involved with the team's care were "exceptional".
"Everyone has just been incredible - people didn't hesitate to help. And I've had so many kind messages which I am truly grateful for."
The competition rules state that the Steel could have looked for players from any Beko League side, provided they had not played two ANZ Premiership games, which would make them protected players.
However there was a desire to stay within the south.
"We've put a lot of work into our development pathway for players and it's really important we support our athletes ourselves when we can," Steel communications manager Kate Buchanan said tonight.