I raised 2 daughters a year apart. We certainly had our moments. I worried about them constantly. They were/are so precious to me. I didn't want them to make mistakes that could ruin their lives. I didn't want them to make mistakes that I made. I remember once my husband and I were sitting outside and a convertible drove by our street, speeding, and both my daughters were riding in it. They were 14 and 15 at the time. They couldn't understand why we were so upset. They were enjoying themselves but all I could think of was them getting in a wreck. Plus I didn't know the particular boy driving the car and he was older. We Moms nag and repeat ourselves because we love our children. If we didn't we would let them go when and where they wanted and they'd have no curfew. That would be a lot easier on us Moms. Your Mom may worry more about you because you do look older.
From Michael Berg:

Every person has a unique connection to the Creator that can never be extinguished, and every person has a great soul that can manifest important things in our world. To make a person feel less than they are because of something inside themselves, be it faith, race, or sexual orientation, is the greatest sin of all."