@danilol
If your child was a green card holder in 2019, and only had wage income, then she was not required to file a return. You can answer "no" to the question "have you failed to file a required tax return."
She has the option of filing a return and should get a full refund of any federal withholding, and a partial or full refund of state withholding. For a 2019 tax return, the filing deadline to claim a refund is July 15, 2023 (the state deadline may expire April 15, 2023, depending on what state she lived in.)
