Yes. For the Online program (it shows you are using SE online), you can only complete one return with each account. So, you would need to create a new account and purchase a new program to complete a second return (if the taxes are simpler, you can try the Free Edition for her).
However, in the Desktop program, you can complete multiple returns using the same software. So, if you have not already filed your return, you could look into the desktop option. You can view details about the desktop software below -
https://turbotax.intuit.com/personal-taxes/cd-download/