She provided the third leg of a winning treble for hoop Wanderson D'Avila, who won the first two races on the program.
John said D'Avila had put his hand up for the ride in the Eagle Farm Final.
"I was most impressed with his ride on the mare and he certainly put his hand well up in the air," he said.
"I'll sit down with the owners and they will make the final decision by Wanderson's definitely in the running."
Meanwhile at Bowen, Such A Whit, ridden by Cody Collis, was a $13 chance in his heat win over a previous series winner in Mason's Chance, who is trained by Olivia Cairns.
It was Such A Whit's first win in 14 starts this season but she had won twice at Mackay in March last year.
The 23-year-old Joshua is putting together an imposing resume for a comparatively-newcomer to the training ranks and is looked forward to the step up to having a runner on the big day later this month.
There will be five BOTB qualifiers being conducted across Queensland this weekend – Barcaldine, Gayndah, Injune, Toowoomba and Cunnamulla.