She had the decency to blush and drop her head as she apologized, "Sorry Professor. I just... I was in the middle and my concentration... No. It was rude and there is no excuse for that. I'm sorry.
Chewing on her lip and keeping her head down, shoulders slumped with guilt, she moved the next piece into place. If Colossus continued to observe her, he'd realize that while her action had been closer to what a certain someone would do... her manner of moving the metal was decidedly different. Everything moved around her in a circular motion. Even when she moved him, he had circled around and back rather than just a straight pull.