What are examples of Handful's sense of irony in the invention of wings?

One example of irony in "The Invention of Wings" is the fact that Sarah, a white woman, is given Handful, a black slave, as a gift on her 11th birthday, despite her objections to owning another person. Another example is Handful's desire for freedom and autonomy, despite being trapped in a system where her identity and fate are predetermined by her status as a slave.