From one of the reviews at amazon:
"If there is one character in Anne Perry's Pitt & Charlotte books whom no one likes, it's Grandmama Ellison. She has a brutal tongue and a mean streak a yard wide."
This intrigues me...but having not read the earlier books I have no idea how the Grandma character is protrayed...should be interesting to see how they make a character like this take on a better image,!!!!