Hi Environment,

Well congratulations to both of you, ya it sounds exciting ,

As far as i know Post-Docs are more of faculties rather than students, so she will probably hold a H1B visa status.

Some colleges provide in-state tuition or resident tuition to the spouse of the graduate students holding a GA/RA position or thier faculties and staffs. It depends more on the University policies and procedures, So I hope u will be eligible for those benefits but i will suggest you to check with the college.

Good Luck !!!