The mirror
The mirror is your friend. That is something your subject should always know and of course use to develop her own pose work and gestures as well. The mirror is silent, no comment, no smile, no “oh noooooo”. It gives peace and freedom of work.
The outcome is, that your subject is secure in gestures, poses and behavior when it comes to the real shooting and can use a rich spectrum of trained and working sets.
Olympus E-P3, ISO200, Zuiko 45 mm, f1.8, 1/80 second, one bounced flash