Do you have her information so that you can help her or prepare it for her?
When you use Online TurboTax, you get one return per fee. Each return needs its own account and user ID. If you use the same account and user ID for a second return, you overwrite the first one and lose it forever.
https://turbotax.intuit.com/personal-taxes/online/
Or do you want to request an extension for her?
https://turbotax.intuit.com/irs-tax-extensions/