I've lived her 3 years, i got here when i was 10, and still, i can't get rid of my accent.
My best friend(she also got here 3 years ago, same age, from the same place) her accent is mostly gone, yet she speaks mostly with latino people, her brother is a year older, and the same. In my house we speak spanish, but all my friends except my bff are english speakers, and i watch movies in english, listen to music in english, everything, i read in english too, but i can't get rid of this accent.
YES, for many people accents are interesting, but not in middle school, where the moment you speak people burst out laughing.