Hearcomesthestar scored on debut at Sandown in May 2023 and has run in Stakes races every year since, finishing around that midfield mark.
But Moloney has seen gradual improvement from Hearcomesthestar as she has got stronger and more mature.
Moloney has seen it often with mares like Bella Nipotina, Black Caviar, Pride Of Jenni and Via Sistina, all getting better with age.
"She has steadily got better from prep to prep to where she is now," Moloney said.
"A little bit stronger, a little bit better, not by big margins but just each time she has come back into training there has been improvement, so to take on some black-type racing, as we are on Saturday, it's worthwhile.
"I'm not saying we're Bella Nipotina or Via Sistina, or mares like that, but they seemed to get better with age.
"They trained on, so it's amazing, that if they are looked after, they can keep producing pretty good runs.
"Here's hoping she can keep finding that little bit extra for these types of races."