How has O.Henry featured friendship in the story 'The Last Leaf' in 100-150 words

Dear Student,
Given below is an outline that will help you frame a complete answer.

• The theme of friendship is highlighted throughout the story.
• At the beginning of the story, we read about the friendship shared between Sue and Johnsy.
• Sue was concerned about Johnsy's deteriorating health.
• She tried to keep Johnsy cheerful and happy.
• The theme of friendship is elevated through the character of Behrman.
• When he heard about Johnsy's health, he sacrificed his health for her sake.
• His only intention was to preserve her life by drawing the picture on the opposite wall.
• The unfavourable weather did not stop him from accomplishing his task.

I hope you find this answer helpful. Please post more questions on the forum to be assisted by our team. 
Thank you.