Agree with George this should do it except you should review your client's facts and circumstances that the domicile is indeed in Mexico instead of CA.  It is possible for one to be a treated for income tax purposes as a nonresident while remaining a domicile of CA.

Changing domicile from one state to another (including CA) has a high bar.  Relocating to and living in Mexico, in itself, is not sufficient proof that domicile has changed.  The safe harbor rule of CA allows domiciliary to be treated as nonresident provided the prescribed conditions are met.