Does Savannah even have any friends? I remember the excuse Janelle made in Vegas was that it was "too hot out" for Savannah to leave the house. Why was that not a problem for the other kids? Janelle is growing Savannah like a hothouse mushroom.
It reminds me of the Mama in Like Water for Chocolate - the youngest daughter stays unmarried to take care of her mother until she dies. I'm afraid that Janelle isn't going to let Savannah live her life.