For those saying that the issues can be solved by killing, imprisoning, or exiling Yuriel, while that will solve the problem that is Yuriel herself being a complete greedy whore, the person inside Yeldyria is thinking of the repercussions that any overly severe negative actions against Yuriel will have on the men in the game.
Yes, Yeldyria is the crown princess and has every ability to rid herself of a lowly maid who is clearly breaching decorum. But she's also very aware that she's not in an ironclad position: she knows she has at least three named men that would be more than happy to have a reason to kill her. She's also aware of and trying to remedy the fact that she knows almost nothing about the world she's been tossed into quite literally naked and afraid.
And like she said herself, she was holding onto that hope that Yuriel, as a fellow outsider who can see the game screens, would be able to relate to her situation of being trapped in the game, which that most recent conversation confirmed either wasn't the case, or is Yuriel willfully choosing the path of greed and pride.
Tl;dr: killing Yuriel will get rid of her but not the other problems (men) she led on so Yeldyria is actually making the smart move by playing the long game.