1) If you filed hers using your account...then you overwrote your own file and destroyed it.
ONLINE TurboTax can only be used to file One person's (or couple's) tax return. Any extras you prepare must be prepared using an entirely different UserID and login. Only Desktop software supports the preparation of multiple files from the same software.
2..OR...perhaps you do have a second account, and are just logging in to the wrong one...look for the other one....and write down which is which..
https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have