Reborn as a Scamming Cannon Fodder, I’m Forced by the Marshal to Hatch an Egg

[Transmigrates into a book + food System + laid-back heroine + raising a child + male lead falls for her on his own + sweet interstellar romance] She transmigrates into the body of a cannon-fodder bride who faked having SSS-grade psychic power. From the start, the terrifying Marshal, feared throughout the stars, tosses her into a crystal incubation chamber. Pointing at an enormous dragon egg, the Marshal says coldly, “Hatch it. That's your responsibility.” Su Ruan trembles. “I'm just a laid-back Earthling who faked my psychic powers. Am I supposed to hatch it with my life?!” Dizzy with hunger, she takes out a bowl of egg fried rice from her built-in “Earth Foodie System”... The next second, the cold metal dragon egg shakes wildly with hunger! Even worse, the egg is the Marshal's psychic core, so he can sense Su Ruan's emotions faintly. Su Ruan drools over roast meat because she's hungry. The cold Marshal's ears turn red. “She's so devoted to hatching the egg that she forgets to eat or sleep? She really loves me that much?” Su Ruan is terrified her fake identity will be exposed and her legs go weak because she wants to escape. The cold Marshal secretly aches for her. “She must feel so insecure. She can't bear to be apart from me.” Then one day, the egg hatches, and a palm-sized mini fire-breathing dragon emerges. The little dragon clings to Su Ruan's leg, bawling for its mama, and knocks its approaching father flying with a swipe of its tail. The Imperial Marshal glares at the “brat” monopolizing his wife and grits his teeth. “Is it too late to put it back in the egg and make a new one?” Facing an increasingly clingy dragon hatchling and a Marshal whose gaze grows more dangerous by the day, Su Ruan swallows. “Wait, why is this sham marriage story starting to take such a strange turn? Could the egg's true origins be...?”