How is Lina Mayfleet depicted as a caring person in Jeanne DuPrau’s book The City of Ember?

How is Lina Mayfleet depicted as a caring person in Jeanne DuPrau’s book The City of Ember?
How is Lina Mayfleet depicted as a caring person in Jeanne DuPrau’s book The City of Ember?

How is Lina Mayfleet depicted as a caring person in Jeanne DuPrau’s book The City of Ember?