Knight is hopeful of being fit for England’s second game, against South Africa on Tuesday.
England swept the T20I leg 3-0 in their multi-format series against South Africa, which the hosts won by 14 points to two, having also won all three ODIs and drawn the Test match.
Speaking before being ruled out of the Games opener, Knight said she believed her side would take a “massive amount of confidence” from their performances in the South Africa series.
“The main thing is we take that same mindset into a big world event, we take what we’ve done so well and perform it under pressure,” Knight said. “You know that if you don’t start well in those sorts of events you can be under the pump so it’s so important that what we’ve done, we build on and we continue to have that mindset.
“There’s still ways I think we can improve and I’d love to see us piece it all together in a big world event.”
Capsey is one of two 17-year-olds in the England squad, along with left-arm seamer Freya Kemp, who took two wickets on debut in their last ODI bowling alongside another newcomer to the bowling ranks, 20-year-old quick Issy Wong.
“It’s really exciting,” Knight said. “The young girls have really added something to the squad. They’ve added that energy, that rawness, that fearlessness and for us older girls it’s keeping us young and keeping us excited.
“I’m loving being part of the early stage of their careers and trying to help as much as I can and just let them loose and give them the confidence to do what they do and show off. I think we’ve got that nice combination of excited youth and hopefully a few wise old heads as well.”