Complex sentence: After her recovery from the trauma of her abduction, Violet resumed her Legion career; she also broke up with Duplicate Boy when she learned that, although he had discovered Yera's secret some months earlier, he had neither told anyone nor tried to rescue her.
Split into simpler sentences: After her recovery from the trauma of her abduction, Violet resumed her Legion career. After returning to active duty, Violet broke up with Duplicate Boy when she learned that, although he had discovered Yera's secret some months earlier, he had neither told anyone nor tried to rescue her.