So you are a female dragonborn ranger. Everything becomes clearer.

The lifespan of a dragonborn is comparable to that of a human but a bit shorter. However, young dragonborn grow up fairly quickly, walking only hours after hatching and possessing the biological and cognitive development similar to that of a 10-year-old human by the age of 3. They reach full adulthood by 15 and usually live to be around 80.