Aravis is a girl who is being forced to marry a sixty-year-old man. And so she decides to leave behind the land she is from and head out for Narnia. A friend of hers does not understand why she won't stay, considering that her husband-to-be is wealthy and important. Her friend begs her to stay.
"Goodbye," said Aravis, "and I thought your dresses were lovely. And I think your house is lovely too. I'm sure you'll have a lovely life - thought it wouldn't suit me."
As far as I'm concerned, that is what fantasy writing is all about.