Guys, I think the reason why she's so hesitant in being with the ML is because she's afraid that once she meets her fated partner, she'll fall out of love with the ML, just like what happened to her sister she's afraid that it'll happen to her too. So she doesn't want to hurt him by being with him just to leave him once her fated partner shows up, I feel that regardless of how you feel and who you're with, once you meet your fated partner you'll only love each other.
Guys, I think the reason why she's so hesitant in being with the ML is because she's afraid that once she meets her fated partner, she'll fall out of love with the ML, just like what happened to her sister she's afraid that it'll happen to her too. So she doesn't want to hurt him by being with him just to leave him once her fated partner shows up, I feel that regardless of how you feel and who you're with, once you meet your fated partner you'll only love each other.