Kopua wasn't one of those people. She didn't need to give Kearney's question much thought - "I said yes, definitely I'm not giving up, I want to be at the World Cup," Kopua recalls.
And so Kearney laid out the road ahead. Days, weeks and months of intensive rehab stretched ahead of Kopua as she first had to regain the movement in the joint at a glacial pace of 15 degrees of bend each week. Then she faced the task of strengthening the muscles around her knee that had atrophied after months of immobility.
Kopua has kept a detailed diary of her progress, with photos, video and journal entries marking the highs and lows along the way. Last night was what Kopua, in her understated style, described as a "good night".
Two hundred and twenty seven days after rupturing her patella tendon in her left knee, the star defender returned to the court in the Magic's 52-47 win over the Pulse in Hamilton.
That win cemented the Magic's place in the transtasman league playoffs for the eighth straight season - albeit they were aided by the new conference system put in place this year. But for Kopua the match meant so much more.
It was a major milestone in the journey that began in her living room all those months ago, when she determinedly spoke of her wish to lead the Ferns into Sydney's Allphones Arena - the same court on which she suffered that shocking injury - for the opening ceremony of the World Cup.
Kopua is still no certainty to make the August tournament. She knows getting back on court is only half the battle and the next two months will be about a whole lot of re's - rebuilding confidence, regaining match fitness, rediscovering combinations and yes, yet more rehab.
But Casey Kopua is definitely not giving up.