Mafia 31. Twilight Dances.

I am confident. But why do you need to know who to send to kill her? Knowing who I think she is won't change anything. I don't have any concrete evidence, just my observations.

She is practically on the verge of being eliminated, and if you want someone from the town to agree with you and for the town to win, you also need to put in effort towards the common goal. If I were a Mafia member and was going to send someone to be killed, I would find a better target than the first candidate for being jailed.
So, who is she? What are your observations? Can you at least give a hint? Because no one will listen to your "guys, we can't execute the Mafia, she's not the Mafia, I can't prove it, but let's execute another player who has nothing against him, because the Mafia used their ultimate ability today" and will either laugh at it or, at best, view it with suspicion and a complete loss of trust. And at that point, it doesn't really matter about good intentions or a clear conscience.