There is of course much more to say about ch.42 but one thought just came to my mind rereading the following passage:
It is to be a morning scheme, you know, Knightley; quite a simple thing. I shall wear a large bonnet, and bring one of my little baskets hanging on my arm. Here, -- probably this basket with pink ribbon. Nothing can be more simple, you see. And Jane will have such another. There is to be no form or parade -- a sort of gipsy party. We are to walk about your gardens, and gather the strawberries ourselves, and sit under trees; and whatever else you may like to provide, it is to be all out of doors; a table spread in the shade, you know. Every thing as natural and simple as possible. Is not that your idea?"
I can´t help but recollecting a small girl speaking to her playmate:"I shall wear this and she will have such and there is to be this and we are to do that..." There is no other word for her behaviour than childish - is there?