Madam Mim said:
I need to find the conversation they had about the woman impersonating Madame Fleuriste...
You mean these?
The morning before Colin discovers them using a pool cue and two curtain ties as a spreader bar, Kieran does, in fact, barge into Anne Marie's room as he's accustomed to doing regardless of where they are or why he's there. There's a scent of aftershave that he recognizes but can't quite place.
"Madame, do you have...a boyfriend??"
" Boyfriend ? All the years we've known each other, being perfectly apprised of my work outside the society, and you, Kieran, accuse me of having a boyfriend ?"
Algie, meanwhile, is hiding in the very large closet where he'd gone to retrieve a shirt. The irony is not lost on Anne Marie.
Sam: Don’t you go lookin’ at me like that, Anne. Ah didn’t say a damn word about y’all.
Erik: About what?
Sam: Girl stuff. Don’t you fret none, honey.
Later...
Sam: So, this Madame Floor-eesta...
Anne Marie: Yes?
Sam: Why didn’t y’jes’ tell me she’s tradin’ on yer name an rep?
Anne Marie: I never...
Sam: Do we gotta do this song an’ dance again? Ranger, remember?
Anne Marie; Yes. She is. What do you intend to do with that fact?
Sam: Help y’put th’ bitch in a pine box. Ah stick by mah friends, Anne.
Kieran: You...and...?
Anne Marie: I should hardly think it shocking. We've been friends and companions for many years.
Erik: *polishes his pince-nez in polite shock and bewilderment*
In private, when they first start the case...
Anne Marie: Strychnine! Honestly! And it's not even on the pin, she feeds it to them! How on earth could they think this is me?
Algernon: My dear, I should think you would be glad of a copy-cat.
Anne Marie: Not when she's this sloppy. It is insulting, to be perfectly honest.
And then there's Anne Marie attempting to persuade Sam that she's dangerous.
Anne Marie: I appreciate your help, Samantha. But surely you must realize that I am a dangerous person.
Sam: So what? So'm Ah.
Anne Marie: Being my friend is a liability for both of us; I am not a good person. Had you not known me, you would want to put me in a pine box as well. Dare I say, had we not accidentally bonded over your insecurities and shopping you probably still would.
Sam: Well Ah don't, so yer stuck with me.
Anne Marie: *flatly* Once she has been incarcerated and is awaiting execution, I shall stage a jail break, execute her myself, then dissolve her body in sulfuric acid so that I may continue my work unimpeded.
Sam: ...
Sam: Where're we gonna find that much sulfuric acid?