Zhen Ai: What Happened on July 9Th?

(Little practice writing) After a quarrel with her mother, Zhirou led the summer camp into the mountains to spend half a month without internet. When I returned home half a month later, my mother had hanged herself... Based on the scene and suicide note, the police issued a suicide certificate. However, she did not believe that her mother would commit suicide. Because her parents will travel to Shanghai with a tour group next month, she accompanied her mother to sign up. In anticipation, her mother made a list of must-have items early. At the end of this month, it will be her 22nd birthday, and the mother and daughter made an appointment to take photos of the hairpin cheongsam together. For this reason, they carefully selected two identical cheongsams online. So, how could she believe that her mother would suddenly commit suicide? So she decided to follow her mother's footsteps alone for half a month. All the traces are there, except that on July 9, my mother disappeared for a whole day. No one knows what my mother did that day or who she met, which led to her suicide in the early morning of July 10th... That day, it was as if all traces had been erased by an invisible eraser. What terrible truth will be involved behind this? Horrible love?