Regardless of the amount, you would never report your child's work income on your own return.
Her income falls below the federal filing threshold for 2018, so she is not required to file a federal tax return of her own - although she would have to file one if she wants a refund of any taxes withheld. If she chooses to file a tax return, be sure she indicates on it that someone else can claim her as a dependent.
Note: your state filing threshold may be different.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.