If anyone should be careful here, it’s Kim. Since we’re making assumptions, I can also say that maybe Mint was the one who backstabbed Kim causing their friendship to be ruined. If you entrusted your friend with something, yet she goes on exposing it to the whole world…there’s no point in continuing to be friends with a person like that. The trust you once had is now broken. Especially when that person acts as if nothing happened and they exposed your secret to gain something in return themselves. This is just an assumption, just like what you’re assuming about Kim.