How does Embeth respond to her husband's infidelity in the novel, Young Jane Young?

Embeth is the wife of Levin. When she was younger, she had political aspirations and dreamed of running for office herself. But instead she married Levin and became a politician's wife.

When the affair goes public, Embeth stands by Levin and they continue to campaign together. She defends his actions and denounces Aviva. Everyone assumes that Embeth does this because she is politically ambitious, but she does it because she is madly in love with Levin.