Welcome to CC :) First of all, losing 13 lbs in 32 days is not doable in any way in a healthy manner and crash dieting to get there is just bad news and asking for trouble by screwing up your metabolism, and causing weight regain as soon as you try to eat "normally" again. Typically 1800 is min intake for an active teenager so you should eat no less than that if you insist in trying to lose a few lbs. Frankly you are basically at a healthy weight already and still growing! If you really don't like your shape, I suggest a full body lifting program 3 times a week to gain a little muscle, lose a little fat and decrease your inches.
Really another I'm too fat at 120 lbs. same person as before with an new name? Too much summer vacation.
20 lbs lost at 5'4" is underweight. I was in the army and they made me gain 10 lbs to just joing and during basic had a terrible time keeping weight on me. Too bad that didnt' continue.
Maybe this post should be under health or ED.
Well, you shouldn't compare yourself to others. We are all made a little differently. I'm sure it's hard not to but it's not really helpful. And just because you are not growing in height does not mean your bones, organs and brain are not still developing so you need proper nutrition for that. I really think you should set a fitness goal and start some resistance training. You can get "leaner" and stronger and look smaller without really having to lose weight. This will take time, like months so have patience. From an middle aged perspective of 45, you have plenty of time to work on this! :)