Premium is good for your personal 1040 return. BUT now you said she has a S corp? That is totally different. She won't be fillling out schedule C in the personal return. She will get a W2 or K-1 from the S corp to report on your personal return.
Sorry you will need 2 programs. The Business program and a personal version. For your personal return you can use either the Online Premium or buy any of the Desktop CD/Download programs for Windows or Mac. All the personal Desktop programs have the same forms, you get more help in the higher versions.
For the S corp you will need to use Turbo Tax Business. TT Business is not available to do online or on a Mac. You can buy the Windows Desktop Business program here,
https://turbotax.intuit.com/small-business-taxes
Window System Requirements
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
