I hate to say this, but your questions suggests that you really do not know what you are doing with your bankruptcy filing.
Seems to me, if your income is exempt from garnishment, you may want to rethink whether you actually need to file. (I don't know what other assets you may have, of course.)
If I were you, I would hire an attorney to help me thru this one. It may be that your wife needs to file, but you do not. Or maybe neither of you needs to file.
I also agree with the suggestion that she try to get the student loan forgiven on the basis of hardship because of medical issues causing her to be unable to sustain gainful employment, if that is, in fact, the case.