She couldn't put her shattered heart back together, so all she could do was to helplessly lash out, to helplessly interrogate. Just like how clear water changes color after soaking coffee and can never return to its original transparency and cleanliness.
George Flack had clearly seen her with Edward, so why was he asking whose child this was now? Did that mean he wasn't sure if the child was Edward's, or did George think she had relationships with other men as well?
George Flack only cared about Mallia Mamet, only wanted to solve her problems. If Mallia couldn't handle the child, he could help, no matter what the capacity. He could!
Yet, such concern provoked Mallia Mamet to such rage; watching her breakdown and her interrogation made George realize he had done something wrong, but he didn't understand why it was so greatly exaggerated.