My daughter is still a high school student but was 17 at end of last year why don't she qualify for the child tax credit

The qualifications were changed for tax year 2022. The new limit was to be under the age of 17. 

To qualify, your child must meet all of these requirements:

• Be under age 17 at the end of the tax year
• Is your child, stepchild, foster child, adopted child, sibling, step sibling, half sibling, or a descendant of any of them (for example, a grandchild, niece, or nephew)
• Has their own Social Security Number
  • Children with ITINs don't qualify, but may instead be eligible for the $500 Credit for Other Dependents
• Lived with you for more than half the year
• Didn't support themselves (didn't pay more than half their own expenses)
• Is a U.S. citizen, U.S. national, or U.S. resident alien
  • Residents of Canada or Mexico don't qualify

In 2022, the tax credit will be refundable only up to $1,500, depending on your income. You must have earned income of at least $2,500 to be eligible for the refund. Please see this TurboTax Help article for more information.