Bai Yaoyao had pride too. No matter how much she had loved Xirong Ziye, she didn't want to have anything to do with him anymore.
She simply couldn't forget the pain that she had suffered.
Moreover, she was grateful to Duan Yanhao. When she felt desolate and lonely, he had accompanied her and made her forget her pain.
Therefore, even though Duan Yanhao was that woman's brother-in-law now, she still felt that he was a good man. He was the only person who had offered her warmth.
She hoped that Duan Yanhao would be happy. He had given her warmth and hope, pulling her out of her desolation. Therefore, Duan Yanhao was the most important person to her now.
If Duan Yanhao was really someone else's brother-in-law now, she would watch over him quietly and hoped that he'll be happy.
Bai Yaoyao had always been so selfless when it comes to her relationships. Loving someone didn't mean possessing them, but wishing that they could be happy.