How dare she say not to go for it! I still think she has a thing for her. After that last chapter and it showing her turn back and look at the apartment it felt like a "fuck I have competition now" kind of look.
Again, idk if Yunduo is just worried about her dear friend or if perhaps she thinks shes a better fit herself.
I mean, taking the time showing the whole talk with her ex-husband could be a lil tease from the author.