My two youngest children both had , I wouldn't say imaginary , but friends that we didn't see. my son would sit in his crib and react as if someone was right in front of him and my daughter would sing and talk to someone when she was downstairs in her bedroom. I asked one time who she was talking to and her answer confirmed my suspicions,
she said she was talking to Grandma. Both sets of grandparents had been gone for quite a few years. I figured it was probaly my Mom, so I just kind of watched and made sure that she wouldn't get freaked out. neither one of the kids remember these events.
mmm1a