She does it.

She thought hard about it that night, but finally, she made her decision. She set the vial up into one of her empty darts, and in a rush of impulsiveness, Ana pokes it into the side of her neck. It hit her like a rush of adrenaline immediately. Everything went white, and her body tingled from head to toe.

The effect disappears, leaving Ana afraid and confused... but feeling really good. She touches her hands to her face--no wrinkles. She removes her headgear and brushes fingers around both of her eyes, and then back into her back-length raven hair. Then, she touches her chest, and gasps in excitement. Perky and firm. She does the same to her rear, and immediately runs off to the bathroom to look at herself in the mirror.

Just as it said, she's young again. No longer does she look like a grandma, but instead a beautiful soldier in her mid-twenties. She immediately starts removing her clothing until she's fully in the nude before the mirror. Her hands press over her bust, and her mouth widens into a gigantic smile.

"I can't believe it..." she whispers. "I have my old body back."