Ok, so I have a theory on what's going on here, though forgive me if there was something revealed in a previous chapter that negates me theory, I guess I don't remember if there is. But if not, my theory is, what if Lehm, isn't the Thin Man that tortured and changed Bloody Mary and did that thing to Susperia.
I mean yes, Lehm is definitely the real Thin Man, but what if there's an imposter out there? Maybe even someone who once worked with Lehm. I mean, looking at those women with Lehm, I'm guessing they've been improved in some way, but they don't look totally monstrous, or cannibalish like Mary and Susperia.
So, maybe Lehm actually only improves people who want it and does it without torture, but whoever changed Mary and Susperia is just claiming to be the real Thin Man.
And anyway, Lehm has brought Maytag here, because he feels that whoever this person is, unless he knows who it is, is in his eyes, ruining his reputation, and took Maytag as the only way he could ask for her help in stopping this imposter.
I mean who knows, in a few pages we might find out I'm completely wrong, but this is just what I feel is going to happen at the moment.