Joan,
If your camera does not have a spot metering system (check the manual, easy feature to use) try this:
Frame your daughter as you did before, half figure including the white shirt. Within the viewfinder, notice that the metering system has chosen the optimum combination of aperture and shutter speed for this scene. It might read something like 60 at 5.6. Next, zoom into your daughters face, eliminating the white shirt. Notice that the two numbers have changed. Make note of this new exposure combination. At this point you have effectively "spot metered" her face and the camera has given no consideration, except for reflected light, to the white shirt.
At this point you can do one of two things, first you could, while zoomed in on the face, press the shutter release button half way down and lock in this exposure. With your finger still halfway depressing the shutter release (if you release it will loose the exposure you want) recompose the scene to include the shirt and shoot the picture. This takes a little agility but with a little practice you'll get the hang of it.
Your second choice would be to place your camera in full manual mode and select the shutter speed and aperture setting indicated above when you exposed for the face only, then take the picture.
I agree with the above comments about your daughter needing more light on her face. This should make that happen.
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Mike McCarty
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