It was always just the 3 of us growing up [me, mom & grandma]. Divorced when I was only 3 months old, she was very strong to raise me on her own without any support.
I rely on her greatly, and she on me, which is what happens when you have a Single Mom, Only child situation.
I told John when we were dating that we were a package deal so he knew up front! ;)
We are greatly blessed to have her in our lives.