I’m pretty sure Lyddie had been reading Oliver Twist earlier on in the novel.
Answer: Pick a person, any person,your relatives, friends, celebrities it can be anyone.
Write about that person's features, quality, personality and a good deed that they have done or would do and then write an experience that made you realise that they are your idol
She is willing to do anything to give a gift to Jim
It depends what the explanation is about, but I’d say a diagram would be the most effective in most cases.