How did Bilquis accomplish the most difficult thing that she felt God required of her?

When God required Bilquis to forgive her husband, it was the most difficult thing she could be asked to do. She believed it to be impossible. However, when she confessed her inability and her hatred, she was able to transfer all her outrage to God, placing it in His hands. She felt all resentment and negative feelings leave her, and joy returned as she forgave her husband and wished him well.