It's quite common for lenders to reach out to their borrowers to see if they qualify for a loan mod. Usually the Lenders have to offer foreclosure prevention options to the borrowers before they can pursue the Short Sale. It really has nothing to do with whether or not the Short Sale will be approved.
My experience is that loan mods are rarely given. However if you want to try and keep your property then you may want to give a loan mod a try. If you aren't able to keep your property then just opt put of the loan mod they are offering. The loan mod should be eliminated prior to attempting the Short Sale.
A loan mod, unless with substantial principal reduction, is a band aid. A Short Sale is a permanent solution.
I hope this helps.