I have no response to that

My daughter, A, loves to draw and color. She recently learned to draw circles and has been using her new skill to draw balloons (she is terrified of balloons, but she loves to draw them for some reason). A few days ago I was walking up the stairs and noticed one of her characteristic balloons drawn ON THE WALL. WITH TURQUOISE CRAYON!!! "A," I yelled, "Did you draw this balloon on the wall?" To which she replied in her sweetest voice, "Yes Mommy, I drew it for you." Now tell me, how am I supposed to respond to that?