>>103699207
>get backstabbed by homo by leaving after wasting good will to prop them up
>person who promised to be there for Promise, and you had a fling for leaves the next year
>She's leaving and breaking her promise to get married to the guy who wasted your good will (and others), and reaped the benefits of appearing as a good girl.

The reaping the benefits is more me intersecting, but everything else gives quite a lot of reason for Kronii to think she's fake. And if it truly was Randon, it gives reason for Doob and Saba to distance from her. It's very context sensitive though, because he would just be some nobody if he was getting married to someone else, or if Nimi was getting married to someone they had zero connection to.