You will be happy to hear that this is my last comment on the matter. I don't speak the language ,so all I have to go on are my observations and my history on this site. I have never seen Radi as a tenant so I have no prior knowledge, but I do have prior knowledge of Sera and her behavior is consistent with her behavior in the past. She has always found it difficult to deal with people one on one. That doesn't mean i dislike her because that would be silly. I only observe and hope I have fun doing it. If you observe Sera has trouble viewing a phone with another person with grabbing the phone.
I don't know these people and I don't care to. It's as If i'm reading a book or watching a movie. Some of the characters I empathize with and others I don't and that is based on observation.