As a mother, she could sacrifice the world for her son without a second thought, let alone go to the living hell; she wouldn't think twice. Otherwise, her life would be worthless.
"Where are brother- and sister-in-law?" Nina asked when she first hid her meeting from David; she had already caused mental torture for herself, and she didn't want to keep it from them anymore; it would be nothing a foolish decision.
"They just went to their room; I think my brother went to change his clothes to he