I'm not sure if the monastary ending might be the best option as of right now. She just needs some love and appreciation, but none of the male leads can offer her this. She needs to get away from her sister which is triggering her all the time quite a bit. You know there are times were you should leave people alone to let them cool there head and / or recharge. If I were in here shoes I would've had already exploded at all of them.
While yulan might be the best option out of the available love interests, I don't believe he is the right option for her at exactly this moment. It's sad how the relationship between her and Mirim is played down, so that she can be saved by a prince. She doesn't need the money, political problems and envy, which come hand in hand with the love interests. She just wants her quite and is beeing ignored. 😣