Call from the grave

Today the phone rang.
Now, that in itself isn't anything amazing.
I answered.
"Hello?"
"Hey" the woman with the southern drawl said.
"Hey" I answered.
"Just wanted to let you know we just got here."
"Ok. ... Who is this?" I asked.
"Your MOTHER" the woman laughs.
"Uh...you have the wrong number."
She laughed, said she was sorry and hung up.

Now, my mother has been dead for ten years. I think she must have gotten to where she was going a long time ago. Funny thing is...this woman DID sound like my mom.
I hung up and my husband asked who was on the phone. "Call from the grave" "She said she was my mom."

Wonder who she 'arrived' with?