I would recommend
Kiyomizu and
Kinkakuji.
In the same day it may be much, but in Arashiyama is
Monkey Mountain which is a good hike, but perfect in March or April (I have done it twice in August, and it was hell). Your daughter will enjoy seeing and feeding the monkeys much more than seeing too many temples.
Another fun trip for kids and adults is taking the Torokko train up and coming back on the Hozugawa River Boat Ride. More about that here:
Sightseeing in Kameoka - Kameoka City Web Site