Past the Point of no Return

The plot of A Raisin in the Sun by Lorraine Hansberry slowly picks up pace, until the beginning of the climax, when Bobo tells Walter that their money was stolen by Willy.  I think that this is the ulitmate turning point of the story.  It is the "point of no return" for the family.  The hopes of the family seem to be completely gone.  They no longer have excess money.  Bennie is short on money for medical school and Walter can't invest in his liquor store.  Walter's dependence on money seems to have betrayed him for good, making him mad.  He had focused all his desire and energy on earning respect and wealth through a new career, and his hope was torn away.  Bennie's dream to help other people as a doctor seems hopeless because she will struggle to pay for school.  Ruth might not be able to leave the apartment which she hates.  Everyone has given up hope, which crushes Mama.  She said "Yes-death done come into this here house (p 529)."  After being so close to achieving their dreams, Willy's threat seems to uproot the pride and hope of the Younger family.  Walter goes as far as too deciding they must resort to begging.  They were so happy to finally reach their dreams and leaving the prison of the apartment that they could not dare to go back to their previous way of life.  The shock of their loss only solidifies the barrier between their past and present.  They must find something to cling on to and celebrate, or risk losing the family to the "death" that Mama spoke of.  If they don't move forward, the family and its values will fall apart.