Walking into the Peter Sharp Theater we have no hint of what is behind what look like opaque vinyl shower curtains from one end of the stage to the other. Within moments of her appearance, decked out in a black suit and tie like the kid who hates to dress up to go to Grandma's for Sunday dinner, we know Francesca D'Uva just doesn't want to be here. At the end of 80 minutes, we are so glad she came. She breaks the ice…