Did you use online TurboTax or an installed desktop version? If you had desktop TurboTax ("our computer died") installed on your computer the only files are on your own hard drive, not stored online. If that is the case, you could get a transcript from the IRS:
https://www.irs.gov/individuals/get-transcript
If you did use online TurboTax, then you might be signing on to the wrong account.
Many people have multiple TT accounts and forget how to access them.
Account recovery
https://myturbotax.intuit.com/account-recovery/
Note: This is an example of why you should always print out a copy of your tax return and keep it for your own records.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**