One of the tasks that Jean undertook as a school-teacher was some in-home monitoring / training of telepathic students. She had been monitoring Peter-Paul every couple of months with a short in home visit as the professor had requested. Jean didn't see the need to monitor Peter-Paul because she couldn't sense that he was telepathic and he was just too young for that ability to appear.
Jean's last visit with Peter didn't go well. She'd decided to tell him a little bit about telepathy and then asked if she could read his mind. At first he agreed to it. So then Jean placed her hands close around Peter's head and began concentrating on reading his mind. Peter could feel Jean's presence in his mind then asked her to stop. She said 'I only need a moment more, I know it feels a bit funny, but I'm not going to hurt you.' Then Peter popped Jean one on the nose and said "stop right now." He didn't like the sensation of someone reading his thoughts at all. After that aunt Jean didn't visit anymore. She concluded Peter didn't have any telepathic ability; They thought Peter might be a little feral and he seemed to have a short attention span.