Up this this point, I have consistently - each and every time - provided models who've worked with me a copy of every photo we've taken in a session. Every one of them, except for those I've culled right off the bat for being little more than a waste of storage space (flash not firing, eyes blinking, out of focus, etc.). The copies I send the models are "as shot", except for maybe doing a white balance adjustment. They're not large copies, usually between 640 and 1000 pixels on the long side. Still, large enough for the model to have a good idea of how the shot came out. There are a lot of reasons I provide these to the model, though recently I'm rethinking this. Should I really be doing this?
