The daughter of Zebedee has improved with each start to date and won a shade cosily under Paul Hanagan.
She travelled strongly on the heels of the leaders before striking the front at the furlong marker.
She idled a little in front but held the fast finishing Southern Belle by half a length.
Roger said: "I love it when horses improve from run to run and this filly has stepped up on each of her starts.
"She has plenty of pace and should be competitive in nurseries."