Raydara (11/1) ran out a good winner of the Debutante Stakes for Mick Halford and Shane Foley and may now wait for next year, rather than race again this season.
Second on her debut before winning her maiden well at this track last month, the Aga Khan-owned daughter of Rock Of Gibraltar had last been seen finishing fourth to Jack Naylor in the Silver Flash Stakes.
Qualify was third in the Silver Flash and hit the front two out on this occasion, as Run The Red Light gave way.
The once-raced Lucida immediately gave chase but the 3-1 joint-favourite was soon joined by Raydara, who quickened in eyecatching fashion on the outside of the pack, going on to score with half a length in hand.
Halford said: "I'm thrilled with her. When she won her maiden she made the running after finding herself in front, but I thought we made a little bit too much use of her the last day. We're only learning about her.
"She got a break to freshen her up after that. We took her away to the Curragh the other day and she worked very well.
"Shane said she went up through the gears pretty good and he was delighted.
"She's a very smart filly. Today was a big test and she came through it well.
"I'll talk to Pat (Downes, stud manager for the Aga Khan) now and he'll discuss plans with his Highness.
"The Moyglare (Stud Stakes) is the obvious target, but she does love it fast and she might have had enough for this year.
"She's had her four runs and this is the time of the season that fillies can start to go off."
Foley added: "She's very smart, I probably rode her too forward the last day.
"She came back good and fresh today, even when she got to the front she pricked her ears. Two and a half down I was taking her back and when I let her go she quickened."