Hey Richard,
Maybe she is just running away from home to live with Granny. I had a dog do that one time, she got tired of the Doberman that was living with us, and she had stayed with my mom and dad while we were on vacation. Anywho, she kept running back to my mothers house. I got worried that she would be ran over by a car crossing the highway to get to my mothers house, so I had to let her go live with Granny. LOL. How she got out I don't have a clue, considering we had a fence around the yard. So, maybe there is a message in there somewhere.

Willie