Yikes! This is unfortunate--I'm sorry you got bad news.
That does seem like a high interest rate--see if you can, as PP suggested, reduce that. If nothing else, you might be able to "consolidate" it (even if it is just one loan). Getting the interest rate down will make it less painful if you can only put a little extra toward it every month.
As far as not being accusatory, just, well, don't be. Tell him what you found out, but make it more like WE didn't know than YOU didn't know, if that makes sense. We all know the feeling, right, of just not wanting to look at something? Procrastinating?
Just pay what you can. It may take a while because you have other priorities right now. In five years, your child will be in kindergarten (free child care!) and you'll be making real nurse money. In the meantime, take as many classes online as you can (I did a lot of library school work while sucking down coffee during baby's naptime), minimize childcare by scheduling classes around husband's work schedule, etc. Good luck!
Good luck!