Don't take the ring brother ... if you do one of three things will happen:
1. The ring curses you and draws you under her subjugation and you become her beta boy
2. The ring is a proposal and you are now her beta boy husband which draws the ire of every ... other ... yandere ... in the game
3. The ring is the 'one ring' with the power to draw all the other rings to it. However, since this is a game it is only beholden to its maker. In the darkness it will bind you, becoming your precious, and causing you to become ... her beta boy.
Either way, you're fucked if you take the ring. I guess there are save points so maybe it should be alright. Also with all the crazy ass women in this manga, she might just be the serial killer type ... watch your kidneys bro ... and your left nut. #noringu