Our legal ward, who is not related to us made over $4300. TT says she is not a dependent.

We are the court ordered, legal guardians of a 17 year old who is not related to us. IRS says that she qualifies as a deduction even though she made over $4300.

 

https://www.irs.gov/publications/p501#en_US_2021_publink[phone number removed]

 

In determining if a child is a deduction, Turbo Tax does not give an option for this situation, only asking if we are related by blood. (Sister, grand child, child, etc.) Therefore TT says she is not a dependent. How do I make TT understand that legal guardianship (and fostercare for that matter) invalidates the $4300 earnings clause?