I forget those painful days like I brainwash myself to forget it must be the same for lass.
Besides she was already sus of the pinky.
I was sus of an acquaintance too but u know u shouldnt judge another so quick so i get along with her without fully trusting her.
Then found out the truth about some bad stuffs about her.
Fl didnt fully trust pinky she just get along with her for a bit and just wasnt being rude to her
thats how communication or socializing works
We dont fully trust anyone but we get along with them to avoid troubles
Ras was never one to "get along to avoid troubles" and I could understand forgetting traumatic events if she weren't a character driven by those traumatic events. She even compared the concubine to her sister who she freaking knows is a traitorous spoiled brat. Still, at no point is she suspicious of her. We are shown when Ras is suspicious of another character and this was not shown here. If anything, we were shown her growing fondness, which again, makes ko sense for someone so distrustful to get fond of someone so fast.
I'm sorry, but this whole situation is on Lass, and it just make it look like the author didn't know what to do in this arc. Now we're getting revealed the concubine was the one that tortured her and Lass couldn't remember the very distinct voice of her torturer (who she knew was a concubine) when she remembered all the little facts of 10 freaking years her servant told her before dying??? Not to mention, she didn't mistrust her at any point despite her dogs not liking the mistress, the mistress reminding her of her two treacherous siblings. Way to nerf her on the only other stat that makes her valuable for her position .