Miya had been getting better but she's falling back into her bad old habits again. Blaming everything on oneself is just as narcissistic as blaming nothing on oneself. Itone's current situation is the result of everyone's bad choices: Miya's, Yura's, and especially Harutaka's and Itone's herself. Miya needs to stop projecting roles onto people (nobody's a fucking "prince" or "princess") and start seeing them for who they actually are, or else this sort of drama is going to continue happening to her during her entire life. In fairness, each of the four main characters is extremely selfish in their own ways. This is certainly realistic and makes for some interesting drama, even as I find it intensely frustrating lol.
Thanks for the translation!