Hildegard Peplau was a very smart lady who helped people who were feeling sad or afraid. She was like a special helper called a nurse, who took care of people who were sick or needed help with their feelings.
Hildegard Peplau thought very carefully about how she could help people, and she came up with something called the "theory of interpersonal relations." This meant that she believed that it was very important for people who were feeling bad to talk to someone who could listen and understand them. She called this "interpersonal communication."
She believed that when she talked to someone who was feeling sad, scared or worried, she could help them feel better by trying to understand how they felt and what was causing those feelings. Then, she could help them figure out what they could do to feel better, and help them make a plan for how to get better.
Hildegard Peplau was very good at talking to people and making them feel better. She taught other nurses how to talk to people too, so they could help them feel better when they were feeling sad or afraid. Her ideas helped nurses all over the world take care of people, and she became known as a very important person in the world of nursing.