Denying the existence of homunculi doesn't just mean denying my own existence. It denies the existence of many others before me that have been made, used into tools, and died for literally nothing.

I carry the lives of those homunculi on my shoulders, so having them denied isn't something that I enjoy.

[ She smiles, in a way that practically says that she would have definitely done it for that reason. ] Well, of course the other motive is much stronger, but I'm not allowed to talk about that in public.