It is not much different taking care of three kids than two, especially if one of the kids is not your own. Kids generally behave better when they are not with their parents - Ananya certainly was a gem to take care off, and your own kids behave better too, since they have a novel company.
The children had a great time at the Patterns of Trade celebrations at the museum, where we took them to right after the walk. I took some photos, but there were ever so many activities and not enough time to do them. Certainly, the girls would have liked to make a kite, though they got to touch the snake and eat icecream instead.