I had grown up in Boston in a fairly modern Indian family—including my father, Deepak Chopra. Our life had involved its fair share of Indian tradition, but I had also been given a lot of independence. When I got to New Delhi, there were some noticeable changes, and some were easier to embrace than others. Respect for my elders was part of my upbringing, so I accepted the constant oversight and loving concern of my grandparents even if it felt unnecessary. My grandmother waited for me to come home every night, making it difficult for me to stay out after 10 P.M. I also didn't dare to wear a skirt above my knees, and I was careful about who I invited home—particularly boys. Being a grown adult, I certainly felt like it was taking a step back in time .
What does the speaker mean by saying that? Is that idiom?