In style of comic book create an illustration of a strong yet shy woman with a subtle, reserved demeanor. She has long, flowing dark hair, and her expression reflects a mix of strength and timidity, as if she's unsure whether to reveal her true power. She’s wearing a short, dark blue dress that contrasts with a short beige pilot’s jacket, which features a prominent American flag patch on her shoulder, hinting at her background and patriotism. The jacket is slightly unzipped, suggesting a relaxed but practical look. In her right hand, she is hiding a large, heavy metal club behind her back, its bulky shape subtly visible through the folds of her jacket. The scene should convey a sense of quiet strength, with the character's posture slightly hunched, yet poised and ready for action. The background should be simple and atmospheric, using muted colors to focus the attention on her figure. The image should be crafted in a classic comic book style, with bold outlines, detailed shading, and a slightly gritty aesthetic to enhance the character's strength while maintaining her shy, introspective nature. The lighting should highlight her face and the hidden club, creating a contrast between her outwardly timid appearance and the strength she conceals.