Unfortunately, you cannot include her 1099-NEC income on your return. That is because the election to add unearned income to the parents' return is for unearned income (i.e. interest and dividends). 1099-NEC income is considered self-employment income. If her net earnings were under $400, nothing needs to be done. If she made $400 or more, she'll need to file a tax return.
Here's some information you may find helpful: At What Income Does a Minor Have to File an Income Tax Return?