The Begg-trained mare had her first run since a winter break when finishing fifth to Sheza Alibi in the Makybe Diva Stakes (1600m) at Flemington on September 12.
"She was good last time," Begg said.
"I think the one key factor was she got back on the good ground and last preparation she only got on two good tracks and they were her best runs.
"It doesn't look that we will get that on Saturday, looking at the forecast, but we'll be running as it's two weeks out from the Caulfield Cup.
"We don't want to be running in the Might And Power (on Saturday week) and then back up seven days later into the Caulfield Cup, even though I did do it with Nonconformist, but he was a gelding.
"Hopefully Flemington will miss the bulk of the rain."
Begg said She's A Hustler had improved enormously out of her first-up outing.
And importantly the mare settled well, something the stable has been working on throughout her 16-start career.
"Her wellbeing has come on greatly for her first-up run," Begg said.