"We have a decision to make between the Doncaster in two weeks time or the Emancipation Stakes," said co-trainer Bev Kelso.
"The timing of the races will probably determine that we head to the Emancipation, because it's a week later - two weeks is a fraction too close from the Te Aroha race."
Xanadu had to come from last to achieve her victory on Saturday, but she did it with such great ease that she had the nerve to prick her ears in the closing stages, while many others were searching for oxygen.
Ken Kelso has a theory that Xanadu has had her own issues with oxygen searching.
Kelso believes riding the talented mare patiently lowers the risk of her getting into a type of panic mode, which upsets her breath intake.
That certainly wasn't the case on Saturday and when she was finally unleashed, she put the opposition away quickly.