The Silver Ferns fought back in the third quarter with a run of four unanswered goals to start the quarter to take a 39-30 lead into the final quarter.
Walmsley who shot 36 of her 41 attempts formed a productive partnership with captain Ameliaranne Ekenasio in the shooting circle.
Ekenasio was a standout in the game one loss and was strong again in game two shooting at 91 percent.
Post-game Ekenasio told Sky Sport she felt a “ton of relief” to finally have win after the Silver Ferns’ recent struggles.
“It was time for us to show a bit of heart, a bit of mongrel, show what was really in our bellies.
“There’s still some lapses in the game, we’re not perfect yet, so we will go away and look and that and even try and be better again on Saturday.”
Taurua told Sky Sport: “It’s always good to be on the right side of the ledger but still areas obviously that we need to work on ... our ability to grind it out... it’s good for a win but we know we can do better.”
The final test is on Saturday in Hamilton.