Having been forced to abandon the remainder of Royal Descent's spring campaign, the Chris Waller stable has taken heart from her little sister's win at Rosehill on Saturday.

Royal Descent was officially taken out of the Melbourne Cup this week after her fifth in the Caulfield Cup, a performance her trainer believed wasn't enough to keep her in Australia's richest race.

Chateau Lafaite could head south to the carnival for a Listed race, but may join her Gerry Harvey-owned stablemate in the spelling paddock with a view to an autumn campaign aimed at emulating her sister in the Australian Oaks.

The filly was the $2.30 favourite in the Sydney Markets (1400m) and showed her strength when she wore down Foreign Prince to win by a long head, giving her rival a 6.5kg advantage.

"She is destined for bigger and better things," Waller's racing manager Liam Prior said.

"Hopefully she can be an Oaks filly like her sister. Chris will decide whether she has one more start this spring or goes for a spell.

"Unlike Royal Descent, who won the Oaks on one preparation, Chateau Lafaite will have the chance for a good break before the autumn."

Glyn Schofield has ridden Chateau Lafaite to the past two of her three wins and has a big opinion of her.

"She is learning a lot and relaxed a lot better today," he said.

"She finds the line well and there's something in the tank if they head to Melbourne.

"Obviously she's got a lovely career ahead of her. Beautiful pedigree, which suggests she's going to get better as she gets older."