I mean…

I understand her revenge for her best friend but what she did to the fl isn’t right you know?
And the timing for her to tell the fl everything isn’t really relevant. The fl already moved on and suddenly the girl came to tell her everything? It’s either tell her from the start or don’t even tell her. I mean it’s between the trash, her best friend and her right? Fl don’t have anything to do with her. So for her to come and said “i helped you” isn’t really reasonable.
As for why did she came to meet the ml we will see in the next chapter. Based on her action I don’t she want to snatch him