Unseen Masterpieces

Every evening, Jack returns to a meticulously clean house. Even his three-year-old son's scattered crayons are always perfectly sorted back into their box. Whenever Jack praises his wife's diligent cleaning, she only offers a weary, strained smile. One afternoon, Jack comes home early. Walking into the living room, he is shocked to see his son wildly scribbling all over the pristine walls with crayons. His wife sits right beside the boy, her face turned toward him with a gentle, loving expression, completely ignoring the chaotic vandalism happening inches away. Jack freezes. Then, he drops his briefcase, rushes forward, and pulls his wife into a desperate, sobbing embrace. What happened?