At the beginning

We meet again

that night the 4 brothers went topside for their nightly patrol, as they all walked around, jumping from roof top to roof top, raph heard something from not to far away. then he realized it was tiger claw, raph jumps to the next roof and hide behind one of the many chimneys, as did his brothers. tiger claw was fighting someone, someone small and fast, it was a girl, in fact it was the girl that gave raph the very painful kick to the head.

 she was wearing a full black outfit with a dark blue scarf tied around her waist. she had a mask on but it only covered the bottom half of her face (chin, mouth, nose and cheeks). her hair was long, soft and white, it was pulled back in to a high pony tail, she had a fringe that nicely framed/covered the top part of her face. 

raph whispered to his brothers "that was the girl that kicked me in the head". 

leo turned and faced raph and with un-satisfaction in his voice he said "you have got to be kidding me, her, that tiny GIRL out there, you must be getting soft, she looks like she couldn't hurt a fly if she wanted to". raph just rolled his eyes, all 4 brothers watched tiger claw circle the girl slowly, as if he was waiting for the right moment to pounce. 

" don't you think we should help her" and as soon as mikey said that the girl jumped high into the air. she flipped and landed just behind tiger claw and before he could do anything she jumped again but this time not as high. then 'BAMM' with a side ways kick to the back of tiger claws head, he fell down to his knees. the girl did 3 really fast spins and then extended her left leg out and hit tiger claw in the side of the head with the back of her foot, giving tiger claw a mind breaking head-ache. the girl walked to tiger claw's front and she grabbed out his freeze gun and with a loud bang tiger claw was out cold and stuck to the ground. 

the 4 turtles all looked from one to each other, shocked and confused on what to do next. leo gave a hand signal to his brother and they all knew that is meant 'get back to the lair'. as the brothers turn to leave a voice calls out "i know you are there, now come out so, so we can, uh, get to know each other better".

 the girl tried to hide her laugh but failed. the turtles stepped out of their hiding spot and stepped up the this new and powerful girl. leo quickly shot his brothers a reassuring look before saying "my name is Leonardo and these are my brothers".

 he pointed to each of his brothers as he said their names.  the girl looked all of the brothers up and down before saying "my name is Flo, have we meet before"? 

Flo looked at raph and with realization in her eyes, a smile slowly formed on her face. Flo stepped back and said "I know i have meet you before, i am sure of it". as she reached the edge of the roof she brought 2 fingers to the side of her forehead as if to salute and jumped down into the space between the houses. 

the 4 brothers stood there wondering what actually just happened.