Hallucinations
A lot had happened in a span of one day, and it was not healthy for the siblings. Clearly, they would hate each other till the kingdom come, but that would never be the solution if they really wanted to get justice.
Jenny was not about to hold a beautiful family reunion with Jia in the room, especially after what she had done to them.
Granted, Jenny had her suspicions about the whole thing, but there was no telling which truth was actually the truth. She had surrendered to the media and made claims about what she had done to her family, but even then Jenny didn't believe her.
She wanted to believe that the sister she had loved was still somewhere in there. Maybe she would apologize later, but then it had been nearly ten years. If she was to apologize, well she was a decade late.