It was a real gamble for the selectors to pick her for the tournament as Mandhana suffered a torn meniscus and anterior cruciate ligament in her left knee, which meant that she had not played any cricket since January.
The 20-year-old from Mumbai, who was understandably a little scratchy in the practice games that preceded the ongoing tournament, rediscovered her touch and reposed the faith of the selectors with match-winning knocks of 90 against England and an unbeaten 106 versus the West Indies.
"After that I scored 82 not out against the West Indies in a practice match so that gave me confidence that my batting was not lost. I can bat. It was really tough coming out of the injury but I'm happy. I've done enough in two matches for India and hopefully I can continue that form," she said.
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Mandhana is far from being a typical Indian batter. In fact, she prefers English conditions to those back home. She played a part in a Test victory on English soil in 2014 at the age of just 18.
"I love the conditions here, I love playing in cold weather. It makes me happy inside. They prepare good pitches," the stylish left-hander said.
"It's not that I don't like playing in India, but I like playing here more. I just concentrate on my game, there's no TV and nothing to distract you so that helps me concentrate on my cricket.
"While I was injured I made sure that I worked on my weaknesses. Many people have seen my game so I worked on that I tried not to play too many shots because I had a habit of playing too many shots after getting set. That was the thing I worked on in the last two or three months," she said.
With 196 runs in just two games, Mandhana has no intention of stopping and has already warned that there is a lot more to come, especially with arch-rivals Pakistan next up on Sunday in Derby.
"That's what keeps me going after 50 because I have a tendency to get out after 50 so that's what I keep telling myself. I hope I continue the same form," she said.