Had to check a previous chapter and no, that girl wasn't the 'heroine' to the otome game this world is based from. I think this 'Anne' is the 'Angie' from the last chapter that Rudeth's brother ordered to investigate him. I don't think causing a lethal 'accident' was included amongst her orders, but she was surely doing so to earn higher praises. Quite the little bitch, she is.