Another co sign disaster

My wife did the unthinkable, and co signed a student loan for a teanage friend. No need to go into the particulars, but the loan has gone into default. Now I'm the bad guy because I want to cough up all the info about her FRIEND; which isn't much to get them off our backs. I am pretty much aware of all the legalities of what my wife has done. Right now I am just trying to figure out what I am up against. She does not recall the loan amount or even an approximate. And of course she did not hold onto any paper work, that makes it easier to keep the whole thing a secret. The two of them had been brushing this under the carpet for about three years and now the FRIEND is almost impossible to get a hold of, but we are still right here so guess who they are calling. I was told that I could access basic loan information at Sallie Mae's website with my wifes Soc #, but that doesn't seem to be working. I can not get anything out of the C.A. because of confidentility, and they only want to talk to people that might be or be able to pay. Can anyone help me with getting the current status of this loan (i.e. amount, payments made, etc.)