Idk, man. It seems to me that Sinon is just fooling around; she’s not really interested in him, at least for now. There are also some dudes who want to get rid of her, and we know that a place on the council doesn’t come with universal protection, as we saw with Hebishima—if you mess around too much, you’re out. Right now, we can’t be sure whose side of the council will prevail. So, if we stick to the facts, her story is pretty much open at this point. To be perfectly honest, that could potentially even drag Suguha in, depending on what she’s supposed to do for Sinon. However, I’ll admit that the Admin seems fond of them, which can certainly be a positive factor. (Damn, when did it happen that I’m happy the Admin exists in this game?)
And when things should go bad, the Cult of SILF (Suguha's Illuminated League of Fanatics) will definitely meet to decide how to prevent it.