VINTON, La. - Bouquet Booth established herself as candidate for the 3-year-old filly series at Fair Grounds this winter with a fast-closing, half-length win in the Grade 3, $500,000 Delta Downs Princess on Saturday. The one-mile race was part of an eight-stakes card led by the Grade 3, $1 million Delta Downs Jackpot. Bouquet Booth ($21.20) settled in seventh early, as Grandacious took the field through fractions of 22.17 seconds for the opening quarter, 46.98 for the half-mile and 1:12.34 for six furlongs. Bouquet Booth launched her bid into the final turn and went on to cover the distance on a fast track in 1:40.59. Shaun Bridgmohan was aboard Bouquet Booth, who he also rode to a three-length maiden win last month at Keeneland. “The filly’s improving every race that she’s run,” said Steve Margolis, who trains Bouquet Booth for Right Time Racing. “We took a big shot coming here. [Delta director of racing] Chris Warren said, ‘You guys really fit, and we’d like you to come.’ We talked it over, and it was well worth taking a shot." Bouquet Booth is a daughter of Flower Alley. She has now won 2 of 4 starts. Margolis said she will head next to Fair Grounds, where he will be based when the meet opens Thursday. “We’ll take her back to New Orleans,” he said. “We’ve got a lot of good races as a 3-year-old, like the Fair Grounds Oaks.” Last year’s Princess winner, Quiet Temper, went on to win the Fair Grounds Oaks. Niji’s Grand Girl finished second in the Princess, a neck in front of third-place finisher Grandacious. Promise Me a Cat, the favorite, finished fourth at 4-5. “It was first time two turns, and maybe it affected her a little bit,” said Javier Castellano, who rode Promise Me a Cat. * In other stakes action, Z Humor ($5.60) led throughout to win the $125,000 Delta Mile by four lengths over And Music Came. Gerard Melancon was aboard for Zayat Stables and trainer Steve Asmussen. * Briecat ($7.40) dominated the $125,000 Treasure Chest for fillies and mares when she drew out by 5 1/2 lengths in a performance her trainer, Vladimir Cerin, felt was the best of her career. It gave him career victory 999. Patrick Valenzuela was aboard for Holly and David Wilson. * Valenzuela also won the first race on the card with My Star Runner ($4.60), who scored by two lengths in the $60,000 Orleans. Cody Autrey trains the winner for Charles Fletcher.