How does Mrs. Amberson's arrival affect Scarlett's summer?

Who is Donna Spendler? Why does Mrs. Amberson hate her so much?

Why does Eric break up with Scarlett? Why is he afraid to date her again?

What setbacks does Spencer's play experience?

How does Mrs. Amberson help and hurt Scarlett and Spencer?

How does Scarlett change throughout this novel?

What are the new career paths for each of the Martins and Mrs. Amberson when the novel ends?