@debbieannjon - it could be both -
if she earns enough money or tax withheld from her paycheck or works as a contractor (and not a W-2 employee), she is required to file....
you have the option of claiming her as a dependent or not claiming her. But frankly, if you don't claim her, you can't claim the AOC credits. Also if you CAN claim her, even if you don't, she is not eligible for the $1200 stimulus.
best to follow the prompts in TurboTax... but suggest not "over thinking it"; the IRS has had plenty of time to overthink it themselves and does motivate taxpayers to claim their college students in most all scenarios
