It's not okay to not appreciate living.
Helena is very depressed, hates her life, and feels very lonely in her misery.
Helena wants to open up to others about how unhappy she is.
Helena tells her sister about her sadness and depression and asks her sister to help her seeing the good side of life.
Helena starts complaining regularly to her sister about how horrible life is and how no one loves her.
Helena's sister is happy to help Helena get better.
Helena's sister starts being depressed herself because of Helena's grim view s about life.