Most beautiful girls do to some degree (other than the blonde sorority girl types who got their assuredness from riding the cock carousal in high school and disappointing their fathers). It's the ugly goblinas who have the unwarranted levels of self confidence. Amelia is that perfect middle ground between good looking and not a thot. Unfortunately types like her sometimes end up dating absolute losers who don't deserve them because their low confidence has them settling for less. Many such cases, especially for girls who live in flyover states/small towns, which she definitely gives off that vibe at least to me.