Teen Gothic

I(22F) have been BIG TIME into darkly inclined stuff and horror movies and alternative stuff in general ever since I was very very young and I have recently gotten into goth music and im finally dressing the way that I want since I have a job with my own money saved up. Now also keep in mind, I don't have my license yet bc I've been anxious about driving but my moms helping me get used to it. One morning I overheard my dad say some shit along the lines of "Shes obviously mentally 15 with the way she dresses and sets her room up you just gotta wait for her to grow up a little" like somehow my style makes me not a "mental adult". Do any other 20+ alt people have to deal with infantalizing mindsets like this?