Here's a shot similar to what you're describing...
This was lit with an SB-900 flash bounced into an umbrella at camera right, about three feet from Mark and the baby.
About reflections, the thing to remember is that light bounces off reflective surfaces like a cue ball off a pool table bumper. If the light hits the subject from an acute angle, it will reflect away from the camera. If the light comes from the same angle as the camera, then the light's going to reflect back towards the camera. That's why you get crazy reflections in glasses from on camera flashes.
With lighting people, I like to use the largest light source possible, and try to get it as close to the subject as possible.
David Buzzard