Online accounts are only good for one tax return.  Each tax return requires its own account with a different user ID and password.

The CD/download versions that install on your computer  can file multiple returns, just  start a new tax return  form the Top menu bar File menu.

>Open Turbo Tax on your computer

On top line:

File>new

Create new return for her.

You can do multiple returns on Turbo Tax. Hers will efile for free also.

Save your money! You can use the same version of Turbo Tax you installed on your computer for your use for her return, you just need to select the "start a new return" option when you open the application. Likewise the application includes five free federal eFiles so you should be covered.