Are you sure she's talking about a private student loan? She mentions "private loan companies" in her post, which could refer to a private (alternative) loan, or it could mean a private (non-federal) loan company.
Sheena, if the loan you are referring to is a Federal loan issued from a private company, you most likely still have forbearance, as well as deferment, as an option. I work at a lender, and I know that we do not limit forbearance on Federal loans. As for deferment, you may qualify for an economic hardship deferment - which is typically limited to 3 years. In-school deferments are not limited as long as you are enrolled at least half-time, make satisfactory academic progress, etc., etc.
If you are referring to a Private (alternative), education loan, the suggestion above to speak with your lender about options is a good one. Most lenders will work with you - they don't want you to default.
Good luck!