I never created DC canon.
Stargirl wasn't worried when Gentleman Ghost ran and carried jewelry at the same time. Smirking, she flew by many restaurants with shops. Stargirl focused on Gentleman Ghost before she aimed the Cosmic Staff at the valuables in his arms. Energy was released and went to them.
It lifted the jewels. Stargirl watched as Gentleman Ghost looked around.
Valuables were then returned to the jewelry shop after Stargirl used energy from the Cosmic Staff to place them in their rightful areas.
It was the next day when Courtney Whitmore scowled and struggled to remain awake while a teacher mentioned math problems.
THE END