Sorry you need to get it from the IRS or from Turbo Tax if she used Turbo Tax.
You need your 2018 AGI to efile 2019. The AGI is on 2018 1040 line 7. If you filed a Joint return you use the same AGI for each spouse How to find the AGI.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947
Did she use the Online web version of the Desktop CD/Download program? Did you ask her for a copy of your 2018 return or the log in info?
