Mary and the Mouse, the Mouse and Mary — Beverly Donofrio

"Mary lived in a big house with a very little mouse. The mouse lived in a little house inside of a very big house, with Mary." Even though Mary has been warned to stay away from mice--and Mouse has been warned to steer clear of people--the two can't help but peek at one another. Side by side, they grow up, go to college, get married, and have children of their own--Maria and MouseMouse. And then one day, Maria and MouseMouse do something surprising . . . something their parents never did. They actually come nose-to-nose and speak to one another!