You might try carrying a camera around with you all the time, to get her more used to it. Also, use the zoom inconspicuousl y (sp?) with her in the room. Not to take a picture, but to get her used to the sound. Don't even look at the camera while doing it.
Take it slow. Try turning it on and off a few times a day with her in the room, maybe zooming once or twice, gradually increasing the amount of times you can do this. Granted, you will probalby go thru alot of batteries w/o taking any pics, but it will help her get used to the smell, sight and sound of a camera.
You didn't mention if she was afraid of the flash. If so, you might try taking a few flash pix of nothing so she can get used to that as well. Once that works well, try putting the camera up to your face, as if to take a pic, but only do it for a brief second or so. Eventually you can work your way up to taking pix, and she shouldn't think anything of it.
Hope this helps.