I think Monica is a trustworthy person. Ciera's move is a desperate one and Monica sees through it.
Gervase is trying to show to the jury that he has a say on everything and not just Tyson's follower, that explains Gervase being obnoxious.
Yeah, I suppose so. Monica doesn't seem like the type of person to jump ship.
If I was in Monica's position, I would vote Hayden out, but then re-align with Ciera and whoever returns from Redemption Island, thus ensuring that I'm in the majority, but in an alliance of three and not potentially at the bottom of four.
However, with Tyson's idol, it's tough to find a way through...