Godwinson
"Well, I've got nothing."
The issue is that a 'personal' visit might be taken by others as de facto support, or it could be something that would spark tensions -- we have no way of verifying, but it makes her say what (if any) consequences there would be, so that way if we end up needing to distance ourselves over the matter, we can say what she told us.I don't see why a personal visit would cause issues for the eventual official visit. Presumably there would be no real commitment involved either way. Sabrina can't speak for the Mitakihara group as a whole unless she's talked to Mami and Homura about things too and Kurenai would not be an acting representative of the council in this format. Basically, we're just browsing.
Essentially, one of the ways to insulate yourself from certain ploys in a highly political environment is to make anyone you talk to have to tell a blatant falsehood if they're trying to manipulate you into actions or appearance in support of their aims. (I really wish I didn't know this stuff from personal experience, but unfortunately I do.)