Solved
She is 17, but lived with me all year and I am legally entitled to claim her as a dependent this year.
If your child turned 17 in 2016, even on the last day of 2016, you do not get the child tax credit. There are no exceptions to the rule. You can still claim your child as a dependent.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.