How could a female thats 14 years old and 4'11feet tall. weights 144 pound what's the fast way to lose it in 2months?

Unrealistic: Weight management is a long-term endeavor done best with guidance by a registered dietitian. She needs to set realistic goals in terms of her BMI, which is 29 if her age is 14.0 years. A 20 pound loss over a 2 year period could achieve a BMI of less than 25 or in the normal non-obese range. Daily exercise, appropriate food choices and support are essential for success.