A childhood belief about imaginary friends

My older sister had a friend with the last name Bower. My younger sister who was maybe 4 or 5 at the time wanted a friend too, and she didn't have many,so she invented one. She called the friend her "bower" and got great enjoyment out of playing with her much to the delight of the rest of us who got much enjoyment laughing about it. We still do to this day, over 30 years later, ask her about her "bower".