
A homebred for Stonethorn Stud Farm, Millisle has two wins and a second from three starts and looks well capable of further success.
"She got into a battle and didn't quite know what she was doing at Down Royal (previous start). She found everything so easy at Bellewstown (first start) and had never had a horse leaning up against her and battling like last time - I think that stood to her today," said Jessica Harrington.
"I didn't quite like her draw but she coped with it well and jumped nicely. She stayed well. It's great black type for her at two and especially for Stonethorn Stud Farms. It's an old family that she comes from and she's the last foal out of the mare, so it's an important win."
Millisle is a half-sister to stakes-winner Ithoughtitwasover and is the ninth winner from good producer Green Castle.
Millisle is the 11th stakes-winner for Starspangledbanner, who stands at Rosemont Stud this spring at a fee of $22,000.