Who has মোছা the Chii's memory?

Chitose Hibiya, the lanlady. Ms. Hibiya didn't know that Elda had downloaded Freya's হৃদয় 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 হৃদয় into hers and even though Hibiya deleted her memories,She couldn't মোছা her heart. P.S it actually was her হৃদয় that Elda downloaded and if আপনি listened while Hibiya explained all of it to Hideki,while freya was laying there Elda ব্যক্ত ''I will download your হৃদয় into mine that way আপনি will still be alive.''