He would learn along with everyone else—perhaps it was unwise to let him find out in that manner, but to reveal the "pregnancy" to him now was too risky. And she definitely couldn’t tell him it was a lie, either. It was all too precarious. It might alter Martin’s behavior to the point of being noticeable, and if Draco found out, he would want to know why she had told the painter so early when they’d agreed nobody else would find out yet.