How can a 13 year old girl lose 30 pounds from her stomach in 30 days?

Why would you want to lose weight if you are 5''2 and 80 something pounds you should be loving your self. But i had that same problem when i was 13 i was 5''4 and was only about 60 pounds. but then when i moved i relized that i was killing myself and got some help. so you should not want to lose weight but you should love yourself for who you are