Naturally collect fat around my hips?

I'm really friggin frustrated right now. I've been dieting recently and have lost about 20lbs. Whenever relatives see me, they can tell I've lost weight and congratulate me, but... ugh.

I'm fifteen and weigh around 135lbs. My top half is nice, with average breasts, a thin waist, and a fairly flat stomach (there's a little fat there, but I come from a morbidly obese family, so don't really care about an extra inch there), but I'll be damned if I can get rid of the fat around my hips. My legs aren't really fat, but I still have a muffin top in skinny jeans, and I'm definitely more jiggly on my bottom half. I do taekwondo, which focuses on leg and cardio strength, so you would think that they would've shapened up by now, but they HAVEN'T. Dammit, it's making me mad. I'm SO CLOSE to being where I want to be, but I can't get rid of the extra fat around my hips and thighs. My family is seriously disgustingly obese on both sides, so I'm afraid that I'm stuck with this extra fat, that no matter what I do, I won't be able to slim down to my goal of 120lbs. What do you think? Any ideas to burn fat on my bottom half? Thanks.