
Breathe, she isn't leaving Ale for the prince. She is in love and VERY VERY happy with Ale. After all it was her love for him that caused her to be reborn in the novel. She's not as dense as you think. She's just not wanting to mess up the story line any more. There is a lot more going on than meets the eye and you giving the wrong impression with your spoiler isn't helping. Besides, if that ruby ring was from the prince, and she knew it, she would have chucked it of the window. I also doubt the prince would have given her something so simple and plain, he likes to show off, he would have been more flashy.
Chapter 81 (raw) Spoiler: I hate this!!!!! Ibee and d**go have match jewelry color (ruby) wtf wtf. and they kinda getting along.... she doesn't seem bothered by it. Wtf. What's with this kind of manhwa protagonist ! Is this angst. (Theory) Is she gonna eventually fall for that guy and leave duke and he'll d*e cause it is the plot of the story T-T or gonna have some ever cliche fl torn and contemplating between them. If yes, I'm just gonna prepare for the angst dude. Rip duke.
Link: https://rawkuma.com/sincerely-i-became-a-dukes-maid-chapter-81/