Walton

1. writing

1.1. letters to sister

1.1.1. Margret

2. captain

2.1. boat

2.1.1. willing to give it up

3. rescues stranger

3.1. sled

3.1.1. chasing

3.2. infatuated by him

4. feels lonely

4.1. wants friend

4.2. scared people will think he's softhearted

4.2.1. too compassionate