Imaginary friends

We have a new imaginary friend in our family. Riley used to have two imaginary friends whose names were lorlea and annie-lala. Riley said they were his sisters that lived in cedar city. I think they have been replaced, however, with Fifi the ghost. A new addition over the past few days. Riley asked me on Saturday if Fifi the ghost could be in our family and tonight at dinner when Riley didn't want to eat his food he said that Fifi the ghost was going to eat it instead. He then proceeded to have a conversation with Fifi who was apparently in the next chair.