The Letters From the Angels by Don Lowry

Don lowry was not a gifted writer, but he was a gfted manipulator. Pamela often sends jessie stories about the two of them for a little extra money. In one pamela and jessie go on a picnic together. He literally rescues her as a knight in shining armour. There's one story that has them both lying on a bearskin rug in front of a fireplace.