If Wei De were to show up, Jiajia would not know how to face her father and might not know how to reject him.
If Zhai Hua was around, the situation would be entirely different. Zhai Hua would be the one dealing with Wei De and would also be the one rejecting him. Once Jiajia graduated from middle school and went to high school, it would be even more convenient. Once she was in high school, Jiajia would be in a boarding school. Then, Zhai Hua would only need to send and pick Jiajia up once every two weeks.
Jiajia, who learned of this decision after waking up from anesthesia, did not refuse. "Mom, why has Dad become like this?" Both she and her mom had witnessed her dad sleeping with her aunt. After the court agreed to her parents' divorce, her dad had the cheek to show up in front of her, saying that it was entirely her aunt's fault and that he was innocent.