1) The letter is an argument between Medea and Jason, her ex-husband. Medea blames Jason for all of her actions, saying she betrayed her father and killed many people, including their children, because of Jason's decisions. 2) Jason responds that Medea's actions were her own choice and he did not ask her to kill anyone, including their children. He says marrying another woman was meant to help Medea, but she killed the princess out of cruelty. 3) Jason no longer wants to be with Medea after she murdered their children and many others in her quest for revenge against him. He believes Medea has anger issues and takes pleasure in destroying kingdoms.