Where might I enter a deduction for (previously taxed) unrecovered contributions my mom made to her teacher’s retirement for her final return? They are non refundable.

My mom passed away before the previously taxed contributions to her retirement were completely recovered. I was notified that these contributions were not refundable but could be claimed as a deduction and was referred to publication 575. However, I did not know if TurboTax provided for such a deduction or if a paper filing and document submission would be necessary.