To e-file successfully, the IRS needs Susana's adjusted gross income (AGI) from Susana's 2018 tax return

[Critter]

Yes ... so enter that amount. 

[Critter]

Where do I find my AGI?

https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

Your 2018 tax return shows your 2018 Adjusted Gross Income (AGI) If you filed a joint return then the AGI is the same for each of you.

Form 1040        line 7

If you are using the same TT account that you used last year, you should also be able to find this number in your Tax Timeline for 2018…

[VolvoGirl]

Is Susana your spouse?  If you filed a Joint return last year then use the same AGI for each of you.  

If she didn't file a return last year enter 0.

You need your 2018 AGI to efile 2019. The AGI is on 2018 1040 line 7.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

[debbie13]

Yes this is correct.