Walter tends to hurt his familly with the actions that he chooses to makes. He argues with Ruth,Mama and Beneatha quite often. He's also not a good listener, even thought his family tries there hardest to look out for him.
She has had to rely on insurance money from her father's passing and brother's investments for a lond perios of time. That made her realize her dream of becoming a doctor in the future. She also gains a new perspective