Spelling and grammar mistakes.
- drawing on her love of running, she decided to organize a 5 k.
- run to raise money for families of patients at a local children's hospital.
to help raise money for families of patients at a local children's hospital.
A short story conserves characters and scenes, typically by focusing on just one conflict, and drives towards a sudden, unexpected revelation. Go easy on the exposition and the backstory, your reader doesn't need to know everything that you know about your characters.
D, slowly and carefully. Hope this helps.