Tolong dong dibantu mau dikumpul kan,

it's about pessimism, because johnsy's thoughts are too depended on the ivy leaf, she counts down the falling leaves as if when the last leaf fell, her life ends.
It's also about hope, because Johnsy is still thinking of living because she still sees the last ivy leave.

the behrman's painting became a masterpice because it made johnsy tried to survive, as she thinks that when it fell her life ends too. well, i thought that it was a great masterpiece though, cause it made someone to keep living

pretty much, yes, i was surprised with the end of the story as i wasn't expect the last ivy leaf was actually a a painting made by behrman who laughed at johnsy's words

the biggest sacrifice that i've ever done to my family or to my friends is yet to come, as my life hasn't ends