Winx set a world record of Group One victories by winning a third consecutive renewal of the George Ryder Stakes - but trainer Chris Waller has yet to commit to a run at Royal Ascot.
The extraordinary mare claimed a 24th triumph on the spin, and a 17th top-level success, with a three-quarters-of-a-length defeat of Happy Clapper in the big race at Rosehill.
Ascot officials are keen to see Winx head to Britain for the Queen Anne Stakes at the Royal meeting.
But Waller told Sky Thoroughbred Central: "To be fair to the owners, we haven't even discussed it. We know when it (Royal Ascot) is, and where the races are in Europe. This was very important, to come back and be fairly dominant.
"And in three weeks' time there's the Queen Elizabeth, the signature Sydney race which we were never really going to miss unless we were going to campaign (with several runs) in Europe.
"So we have to talk about coming back, if she went to Europe, and race in a fourth Cox Plate - she can only really go there for one run, possibly two.
"But we've got to put all the cards on the table, talk to the owners, check on the horse is most important, and we'll let you all know.
"Her career has never been hidden - we do respect everybody that follows her here, and over the other side of the world."
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