Withdean started the second-half the stronger, as they began their hunt for their second equalizer.
Five minutes after the start of the half, Mia Starr was denied by Worthing keeper Georgina Smith, who came on from the bench for the second period of the game.
In the 55th minute Exley slotted home her second goal of the afternoon, and third for Worthing, after a great effort from the right, which saw her expertly guide her shot into the far top corner.
Withdean did not back down and were looking for more, with Darcie Flower-O'Brien almost brining her team their second goal, but she was denied by Worthing keeper Smith.
Just minutes after Worthing broke away and Libby Bunn tried to get past Withdean keeper Tarzi unsuccessfully.
In the end, Worthing ended up lifting the Sussex Girls’ Challenge Cup (Under-15s) despite Withdean’s brave efforts.
Worthing manager Mark Whitlock was very pleased with his players after the game.
“It was a really tough game; we took our chances,” he said.
“The girls have really stepped up from the league game and they deserve the result. Of course the goal just before half-time changed a few things but, the team learned from the last game against them and were able to keep that focus”
Regarding double-goal-scorer Willow Axley, Whitlock said:
“She had a great game. She’s very versatile and made a very big difference and she’s certainly got a bright future.”
Whitlock was also keen praise the captain of the team, Chloe Read: "She really led by example today," said Whitlock, "she's someone that all the girls can look up to and whenever we're in a tight spot, she's there showing that leadership."