Lonemoon turned to look at the still screaming Zhi Lin in Shen Ying's hand. "You swallowed a part of Mushroom's soul on purpose!" That part of Mushroom's soul might still have contained some of her memories. That was probably why Zhi Lin could disguise herself as her for so long, so that even Fatty could not tell that she was not Mushroom. This was also probably why Lonemoon was not able to tell that Zhi Lin was possessed. "Mushroom was not devoured by an evil spirit - you were the one who attacked her!"
"No… I don't know, I don't know!" Zhi Lin struggled and shouted. They could no longer tell if she was writhing in pain at being literally torn apart, or writhing in guilt after being exposed. She began to stutter helplessly, "I just wanted to come back. I just wanted to come back!"