I think the answer is herself. I hope this helped! :)
1) The theme of the story is make your own happiness.
2) Money Mark had everything handed to him so he got bored with life while Penny Patty worked for everything and made her own happiness and didnt get bored.
I think this is a very evoking novel. Ivan's life had been a very "normal" life, plenty of situations that led him to achieve things that were very important like having a good education to be prepared for a professional life full of success. His family life with a wife and a son also gave him some emotional stability, but after the accident at home problems appeared and wife didn't give the situation the real importance, then he started to have thoughts and sensations of dying.
I consider this novel a particularly spiritual work because Ivan's loyal nurse, Gerasim, and the little son are the only ones that can comprehend the real risk of death for Ivan. While he suffered his illness, he made a thorough review of his life and found that it was much happier when he was younger. Finally he discovered that his family life, including social relations are artificial and decided not to fight against this truth. At the end, when he dies he had a feeling of extreme joy and liberation.
<span>The hunting expeditions taught White Fang that life lived on life. There were eaters and the eaten. The law was: Eat or be eaten.</span>