Anyone can call themselves a short sale specialist. You need to ask your realtor, what makes them a specialist have they done any deals, written books, taken classes. In regards to a short sale you are going to want to have at least two people as part of the team your lawyer and then your Realtor. Hopefully your Realtor has a team behind him or her as well that can assist. Short sales take time, can be upsetting and are draining. Make sure you are working with someone your comfortable with and can trust. More importantly have a separate lawyer to advise you as well.