My Half Sister Wants to Steal the Credit for Saving His Life, but the Pill I Gave the Crown Prince Was Poison

My mother was reborn. She said that in her previous life, my half-sister had died saving her, and that in this life she wanted to make it up to her. So when I risked my life to drag the unconscious Crown Prince out of a burning building, she shoved me aside. "Remember, your sister was the one who saved him. You're getting married tonight. You were never here." Then she stuffed me into a shabby bridal sedan chair and married me off to a servant. My half-sister proudly helped the Crown Prince to his feet. "Dear sister, thank you for saving him for me. This time, I'll be the Crown Princess!" I smiled. She wanted to steal the credit for saving his life? But I'd just poisoned the Crown Prince. 1. As I helped the unconscious Crown Prince down onto the flagstones, I finally realized