As the tittle says, something cute and small, good for traveling. I was looking at the Pocketbook Touch Lux 5 in red but I really don't much about these entry level devices. Judging from the price, the Touch HD 3 are better?
An important thing would also be how quick it responds, she has very little patience and slowness is something I'm seeing her give up on the device for.
My rational side actually thinks she would get along better with a Kobo Libra but, on the other hand, it's not... a cute device