When she hits the age wherein she's making 'wanna pet' noises and you've judged her able to handle them, you may want to consider a rat.

Rats are more social, friendlier, and generally more durable than hamsters (which I refer to as 'goldfish with teeth'). If properly handled and socialized, they can be incredibly sweet, affectionate companions with a very good grasp of appropriate behaviour. I would never recommend a hamster for a child; I recommend rats all the time.

Also, most areas have 'ratteries' -- private breeders who keep their rats as socialized and healthy as possible. A little research before purchase can get you a small, healthy, happy caged companion animal.