Selecting pictures for client??

I plan on doing senior portraits for two of my friends pretty soon. I am charging them (very low; I'm an amateur) and they are getting a certain number of pictures. How do we go about choosing the photos though?

Like after the photo shoot, do we sit down together and go through them, letting her pick out her favorites? Or do I just go home, pick out the best ones on my own, edit them, then send them to her.