Is form 8615 required?

My grandaughter is independent of her parents, yet TurboTax want's me to complete form 8615 as if they were supporting her.

The reason is because I am checking "No, my earned income provided less than half of my support."

I believe TurboTax is assuming that her parents provided her support. But the reason I checked the above is because her income from working was $5,000 but her unearned income from unemployment was $15,000.

 

So her unemployment provided the majority of her support, not her parents.

Should I simply check "Yes, I provided over half my support with earned income."?

That seems to work well, but is it correct?

Thank you, Grandfather Peter