DH and I firmly believe that his mom is "friends" with our DD. WHen she was a tiny baby, she was napping in the middle of our bad. DH came home from work and we went to look at her. She was awake, looking very intently at something on the ceiling or above her anyway, and "talking." We both immediately said, she is talking to your mom! Nothing prior to that made us think if DH's mom, it just came to us.
Now DD has an invisible friend, her name is "Lora" you guessed it, DH's mom's name. THe funny thing is, she went by her middle name, Gail and we have never refered to her as Lora. Also, Lora has a friend named Ellen. DH's mom had a friend who died young, and her name was...........Ellen.