All-rounder Sciver-Brunt replaced Knight as captain after the Ashes, but has had injury setbacks – an Achilles problem ruled her out of bowling all summer, while she suffered a groin issue in the India T20s.
Edwards says Sciver-Brunt is “on track” to be bowling in time for the World Cup, with England’s first game against South Africa on 3 October, which will help balance the side – they often seemed a batter light during the summer.
“Nat is crucial but we are not putting pressure on her,” added Edwards.
“We have got to get her right as a batter and a captain. She has had a lot thrown at her this summer and she has dealt with that so calmly.”
Another player who will be key to England’s World Cup campaign is left-arm spinner and world number one bowler Sophie Ecclestone, who was in the spotlight during the Ashes.
Ecclestone refused a television interview with pundit and former team-mate Alex Hartley, which managing director of England women’s cricket Clare Connor described as “an unfortunate incident”.
She was left out of Edwards’ squad for the West Indies series, which England said was to manage an injury, and during the ODIs against India, Ecclestone admitted she had considered stepping away from the game.
But Edwards said the 26-year-old was now in “a really good place”.
“We have Soph back smiling and enjoying cricket, she is going really well and performing well in The Hundred,” she added.