It was not until Situ Haoran, Situ Haotian, Old Master Loo, Loo Jianguo and others appeared at the Situ Family's residence and went into Old Master Situ's room to discuss matters that Situ Xin remembered something that wasn't quite right.
From the Phoenix Jade Pendant she wore and the incident at the orphanage, she had been convinced that she had been reborn into her own body from a previous life, meaning the world she was living in now was precisely the world she had lived in in her previous life.
In other words, the world she inhabited now should be the same world as her previous one, and the events that occurred should be the same. Just as in her previous life, she had been sent to an orphanage, and in this life, she had experienced the same thing, except this time, she was eventually found by her family and brought back.