sketchbook

Hello! I am not sure if this is the appropriate place to post this, but I have a very odd question. Does anyone know, with an image that was saved, but somehow saved to a .mbdb file, if there's a way to get the image back out of it? My wife was using the drawing program Sketchbook on her mac...

Looking to play games like Watch_Dogs, Crysis 3, Tom raider, Shadow Of Mordor, and Skyrim at High-Ultra settings at 35-60fps and with anti aliassing on.