I did mine and my mom's 2017 taxes through turbo tax. Is there a way you can see if I did both taxes under the same/separate account? Trying to do mom's taxes/can't find?

I would check and see if you might have multiple accounts with TurboTax. Your information may be safely stored in a secondary account. You can do so by logging out, and going to the recovery website below for a list of user ID's for any email addresses you may have used.

https://myturbotax.intuit.com/account-recovery/