I'm guessing around 5'4 or 5'5. A lot of it has to do with genetics and how tall your parents are.
What's the average height for a 13 year old girl? I'm 5'3" and will not grow anymore because my bones are finished according to my x-ray. (I had my growth spurt and stuff early). My dad is 5'8" and I'm taller than my mom, but all my brothers are taller than my dad. I'm Asian btw
It really doesn't matter much as youre going to be what your'e going to be and none of us can change that so quit sweating the small (sorry) stuff in life here. Being taller isn't all its made out to be as we deal with air pollution, smog , stand out in crowds, etc.
So accept what you have and be proud of it