She wants a ring. She doesn't care that you think it's a scam. What she knows is that you won't buy her a ring. You think so little of her that you won't buy her this gift.
You refuse to compromise; you refuse to budge; you refuse to accommodate her wish. You make her be for this gift, and you still deny her.
You even made her cry, and you post here almost proud of bringing someone to tears because you refuse to see things from her point of view?