I work for real estate attorneys and we have done short sales in the Chicagoland area for several years now, back to when the term was not part of everyday conversation. Yes it is a good idea to attempt, or at least look into, a short sale. The way the process goes, the homeowner puts the house up for sale, accepts an offer, and presents it to the bank. So there is somewhat more control on the homeowner's part. Additionally, once a foreclosure is completed that judgement will forever be on their name. In a short sale, it is completed like a private sale...the only difference is that the bank's payoff letter is for less than the full amount due to them. Finally, if the property goes to auction, a lot of times it is for less than it would have sold on the real estate market. Once the foreclosure is complete, the bank still has the right to chase the borrower on the unpaid amount of the note (but they don't always do that...but it is their right). So, essentially, there is a potential to have a larger amount chasing them post-closing.
First and foremost, I would recommend that your friend speak to an attorney specializing in short sales that can guide her through. A lot depends on where she is in the foreclosure stage and a well-versed attorney will be able to determine how much time is at play.
Above all, don't pay anyone anything up front. Attorneys and realtors get paid at closing. If you want our office's info feel free to message me back.