This is inspired by 'I Became the Stepmother of my Ex-Husband'. I'm only at chapter 3 but the way she scold others is really satisfying. 

The lists here are selected because the FLs are either sharp-tongued or at least knows how to shut up her opponent by words alone. Basically some good ol' face slapping. I'll also try to provide some reviews. 
(BxG)

A very small list for now, sorryyy. I'll add more as I read or finish looking in my personal list but you can give me some if you have novels with fls like this too (with good romance of course).