She's really good with it!
We got the child seat slightly earlier than we were planning to because the tube strike was on a day when Charlotte and I were both working and she was meant to be at nursery, which is near where I work so kinda hard to get to without the tube. Ebay came up trumps, we had a half mile practice run the night before, and the first ride she did was on the back of my tourer, we got the overground to Paddington at sparrowfart before the bike restrictions came in, then rode from Paddington to Smithfield, in rush hour, on tube strike day. The ride back in the evening wasn't so good (lots of grumpy traffic) but it was me that was stressed, she was asleep!
She still doesn't like the bumps (if she's awake) - any hints as to how to cushion them a bit, or do they just get used to it?