Rebecca's Husband's Hands Are Now Two Separate Objects

There were few things Rebecca wanted to do less right now, but she knew her husband's hands would sense any further hesitation. They disengaged from the black pad and let her pick them up, one hand, in each of her own. A sick feeling rose in her throat as, driven by obligation, she gave each one a sweet kiss on the knuckles. She couldn't help thinking, what do you mean, you two? His hands are now two separate objects, don't you mean you three? Or since they don't add up to anything even close to the whole man, shouldn't you be using fractions?