The Villainess doesn't know she is a villainess

Stella travelled to a land she had never heard of and became Asteri Della Rovere, daughter of one of the four dukes of The Atlantis Empire. Her quiet and uncaring demeanour did not change even though her environment had. Adding to the mystery she had quite forgotten her past memories accept for the knowledge she had acquired in that life. As she turned 16 she met a man, the young Grand Duke of the empire with which she seemed to be quite entangled with. "Why was that damn Crown prince carrying you?" He looked like he was gonna murder someone. "I was just tired and he said he could carry me."Why would she say no to a free ride? "Little star, next time you are tired you just break this damn device and call me alright. I will be there even before you blink."He pointed at the communication device that he was so dearly clenching. " But isn't it expensive?"Why did it seem it was so much work? "A few hundred thousand gold coins is nothing in front of me, so will you do what I say? Hmm" He just wanted the damn prince out of her sight. Unable to say anything she just nodded..