Who has alisin the Chii's memory?

Chitose Hibiya, the lanlady. Ms. Hibiya didn't know that Elda had downloaded Freya's puso into her. After the incident with Freya occured people thought the same would happen with Elda and plotted to get rid of her themselves. Knowing this, Chitose Hibiya deleted Elda's memories and put her in the trashcan. But Freya still was inside Chi becuase she had downloaded Freya's puso into hers and even though Hibiya deleted her memories,She couldn't alisin her heart. P.S it actually was her puso that Elda downloaded and if you listened while Hibiya explained all of it to Hideki,while freya was laying there Elda sinabi ''I will download your puso into mine that way you will still be alive.''