Credit to you on earning their trust so strongly, you can't lose from here
I won't accept that from the guy who lynched the other spy D1. I'm afraid you're already caught in the spider's web and there's not much you can do to escape from it unless you realise Tatsu isn't what she says she is. With what would probably be a mafia det out there too why would mafia go and kill Sakura when they could've identified a more important role to go after? Sakura is also an easy target to fake because she's confirmed, but mafia wouldn't try and off her imo because there would be bigger fish to fry player skill-wise like Gajeel.
Also notice how Tatsu only claimed one role, not both? How come you're not raising questions about that? Sucked in to her facade too much?