The two looked at each other for a while, with no one saying a single word. After god knows how long, Orson exhaled a deep breath and said to her, "You have worked hard, Cali. Thank you!" his gaze fixated on her, as he oozed with sincerity.
He had seen how much Calista endured during labor. As one of the people who knew about the spiritual energy present, he had seen how the babies were sucking her spiritual energy, which had caused all the delay and the unexpected consequences which forced Whitey and Blackey to come out in their true forms.
If it wasn't for those two, even if he was to inject his spiritual energy into her, he doubted he could have saved the day.
Although there are other means of letting a woman deliver safely, for example, operating on her, it wasn't guaranteed that she might survive.