I'm not an expert in any way shape or form, so take this for what it's worth
Go grab understanding exposure, read that and play with your camera a ton before you shoot her. I think you'll notice a difference. But you could do it just as you are, and I'm sure she'd be happy, since she's already happy with what she's seen.
I would ask her to not wear white or super pale colors, it's really hard to get them not to blow, and not underexpose everything else. Remember the rule of thirds if you can - you can always crop to it afterwards if you forget, but you do lose some quality if you have to crop too much.
Shoot in RAW if you can. It makes it much easier to correct any over and under exposure issues, and correct white balance if you need to.
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Allison mama to:
DH (lol), Chrissy 15, Mikhail 12, Kiera 10, Kivett 8, Aislinn 6, Alannah 3, and fresh from the oven Kian Oliver-Bell 11/15/07
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