If you identify yourself as Married or Common Law, Turbotax offers two approaches to preparing your returns; These are either jointly with your partner, or separately ( with certain mandatory spousal details being required).
Either way, you will pay for and file Two Individual returns.
It would seem you have opted for separate preparation. You can continue with it, then start a new return for your wife.
Or you can start a new return from scratch, but this time opt for joint preparation as you enter the introduction.