Provided she was 18 on Dec 31 2018, and is not mentally or physically disabled, she is not a dependant and you do not include her income in your tax return.
She must file her own 2018, including any claims she has for credits such as Tuition.
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.