Su Xiaofei would be lying if she said that she wasn't grateful for what Bai Qingyue did. No matter what her birth mother's intentions were, it wouldn't change the fact that she had saved Yun Qingrong's life. The bitterness she felt for Bai Qingyue somewhat diminished, but it wasn't enough for her to forget the pain of betrayal she suffered in the past due to her own mother.
She wanted to think that Bai Qingyue did it to make it up to her, but she couldn't trust her at all. Not when Bai Qingyue still chose her career and reputation over her for the second time. It hurts to know that she cannot be Bai Qingyue's priority.
Perhaps she was foolish to expect that her birth mother would change in this lifetime. While she was certain of how Qiao Fengying felt for her, it was just impossible for Su Xiaofei to believe Bai Qingyue's words and take them at face value.