 Why did the narrator's wife react the way she did when she got home to see workmen at the house?
I heard my daughter's running feet in the animal rooms and her rollerskates banging at her side. Again in the laboratory, I entered the metabolic accelerator and withdrew the intravenous needles from my first volplas. It would be several hours before they would begin to move, to learn to feed and play, perhaps to learn to fly. Meanwhile, it was clear that here was no war of dominant mutations. I kissed her until I heard rollerskates coming across the terrace from one direction and a horse galloping toward the terrace from the other direction. Reporters would "expose the truth" and ask, "Where have these aliens come from?" A 'copter sidled over the ridge, then came just above the oak woods toward us.
 He had shown no sign of actually reporting on his work, and she didn't know what this change meant
 The narrator had told her that he was going to expand his workspace to investigate different mutations  She was upset that it seemed like the narrator was giving up on his work by tearing down his laboratory space  She was hoping to convert the lab space into a room for the family when he was done, and didn't want it to be torn down  He had shown no sign of actually reporting on his work, and she didn't know what this change meant