Mrs Chrissie will have her first run since finishing second-last at Morphettville in the Group 3 Irwin Stakes won by Asfoora on April 12, which Turnbull described as a forgettable experience.
"I think the travel and the weather that day really got the better of her," he said.
"She clearly wasn't at her best, so we were pretty keen just to back off and reset.
"Her three prior to that Adelaide race were OK without being amazing. In hindsight, she was definitely not at her best that prep but if she gets back to it, (it's a) different ball game."
The open sprint is the part of a Flemington card that also includes the $150,000 The David Bourke, which is a qualifier for the Winter Championship Final, and heats of the Creswick Sprint Series, Silver Bowl Series and Mahogany Series for the three-year-old stayers.