I Was Once the Protagonist's Biggest Cheat

He Jing transmigrated into a novel she had barely heard of. She had forgotten everything except for the little bit of the story she remembered and her own impressive, lovely-sounding name. So she became one of the protagonist's companions, going to great lengths to help the members of the protagonist's group. In the end, she became the woman everyone longed for but could never have. He Jing: "...Isn't something about this development a little off?"