The boy in the mirror is a great, subtle touch in this that makes it work. I'd be very very tempted to crop this just past the nose of the person on the left (so she isn't in the photo at all) and just above the can and score pad/pencil. It is then framed by the curtains, has the focus much tighter on the person making the face, the boy is looking at her, and there is a real strong triangular composition between the remaining three heads that leads you around the scene, back up the curtain, in to the mirror, back to the woman, down her arm and so on...
You also get a bit of the board and question in the shot to give context.
Technically I really abhore neat image - skin just doesn't look this featureless. NI can be used subtly, but it takes a bit of work to not have plastic people.
This is just SO dine, the expressions, the tonal control, the overall human richness of it. The face in the mirror TOTALLY takes it over the top. Fine candid!