"I didn't come here to buy this horse originally," Kepitis, who runs Woppitt Bloodstock, said.
"We put her up for auction and then, in the last few weeks, all of our family started to miss our daughter, our granddaughter, so we just decided that, as best we could, if we could get her we would," Kepitis said.
"I am privileged to have been able to secure this filly on behalf of my family, to be able to hopefully see if she can get to the racetrack and, if she can't get to the racetrack, she'll be an amazing mum.
"She's Australian forever and she's going to be just fabulous. - Debbie Kepitis of Woppitt Bloodstock
"Hopefully she'll do a Winx, but it doesn't matter if she doesn't."
Bidding started at $2m and after two bids of $500,000, Stewart – who was bidding on the phone via Mark Webster – announced his presence by raising the bid to $5m.