The 7-1 chance, trained by Richard Hannon, won by two and a half lengths from Scintulla and favourite Harasiya.
"She's a good filly," said Richard Hannon Jr, his father's assistant.
"She was lucky last time she came here, so we decided to supplement her and she was probably the best filly in the race at Goodwood last time, but it didn't go to plan.
"She now gets an entry into the Breeders' Cup and that is certainly an option, but the owner is unfortunately in Hong Kong so we can't discuss plans right now.
"She'll stay a mile and she can be a Guineas filly next year. She's one to look forward to."