I got to photograph this beauty recently. The session was done at her home, in the dining room, with all natural-light. They have big, beautiful windows that allow a huge amount of light in.
She was so much fun to photograph, and her family made it all the more fun. We spent almost 2 hours trying to get shots in, while her family made her giggle uncontrollably.
When I'm photographing indoors, I look for what area has the best lighting. Indirect lighting is optimal for portraits; it creates a nice even light that gradually fades off. Indirect light also prevents harsh shadows on faces.
Notice , in the photograph below, how the light is strong on the left and fades away on the right? Those subtle shadows are what you're looking for.