I never created DC canon.
Stargirl aimed the Cosmic Staff at one bank robber after he ran by a handful of shops with restaurants. His wide eyes were why she suddenly smiled. Stargirl walked to him at a snail's pace. She viewed his scowl. Her eyes flew open as soon as his kick contacted her hands. She dropped the Cosmic Staff before he fled by her.
Stargirl began to scowl as she lifted the Cosmic Staff and held it by her side.
The starry sky was viewed prior to a smirk.
Stargirl used the Cosmic Converter Belt's stars to knock the robber down. Smiles remained.
THE END