You are not yet a resident alien but will be one for the 2019 tax year.
If your wife was on an F1 student visa while she finished her OPT, and then changed to F2, then she was still a nonresident for 2018.
You will both still need to file nonresident returns.
TurboTax does not support nonresident returns.
However we have a partnership with Sprintax offering a
nonresident tax filing solution to our TurboTax customers.
Visit
the TurboTax/Sprintax site for more info or to get started.