It has been a difficult campaign for the John Gosden-trained filly, with ground conditions ruling her out of an intended comeback run at York in the spring, after which a muscle enzyme problem sidelined her for several weeks, meaning she missed Royal Ascot.
She made her belated reappearance in the Nassau Stakes at Goodwood and after finishing a creditable fifth, she was a hot favourite to open her Group One account in the Prix Jean Romanet at Deauville.
However, after racing keenly, she faded in the closing stages and connections will try her over a mile on October 7.
Simon Marsh, racing manager for owner-breeders Lord and Lady Lloyd Webber, said: "She came home from France absolutely fine. She just pulled very hard during the race and didn't really give herself a chance.
"The plan is to drop her back to a mile and run her at Newmarket in the Sun Chariot.
"It's been a very frustrating year with her so far, as I know she's an exceptional filly and we just want her to show that on the racecourse.
"She's in the right hands, so hopefully she can get back on track."