The Girl Is A Fighter

My friend once boxed a kangaroo in the desert!
She got punched in the face but fought strong through the hurt.
A week after the fight she beat a tough black belt.
One so big he could crush a nut with his force dealt.
It was a mighty battle but she had quick speed!
She punched him in the mouth so hard, he had his feed.
Like a weightless ballerina she defeated him.
Used his power against him, she knocked him out dim!
The champion of the world, her heat like the sun,
Shone through the desert, kangaroo, and everyone!