After you file

Continuing the question. ... I just realized that Turbotax is asking for my wife's AGI. We filed a joint return for tax year 2020, as we always have. The same for this tax year, 2021. Why does the TT application call for her AGI as if it were two different AGIs in the filing? It is a joint return. Is there a line on the 1040 where I can find an AGI that applies only to her income?

Thank you.