At the risk of putting in several posts
I think Astrid will be done and toast by the time we are through with the Scottstown over stepping she did. There is no going back from what she did, and Sharon has all the proof she needs to have Astrid staked and left for the sun. The question is, what potential ally that we do not know of could step in on Astrid's behalf.
Raptus Puellae has a very excellent idea, which would be sooooooo good. But that dark mysterious ally had better be like on par with Virgil or better yet, a visiting Justicar perhaps. That would just be bad assed, to have someone like Calisto level of Power, independent of the city politics, with the absolute authority to impose such a trial by combat, or a stake and toast in the morning. It makes me very very evilly excited at that prospect. If LikesBlondes reads this, I will be afraid for poor Andrew and Sharon.... The MC would have to take the challenge for Sharon, and Andrew would go berserk. He would have to be restrained by all the mental and blood power Sharon has, and maybe even that wouldn't be enough if (mechanically) Andrew has enough willpower to burn.
Indeed. Astrid is just a pawn, but what an interesting pawn she is turning out to be....