If she was, wouldn't Judy have said something? She did when Luke was voted out.

[listen, he's making an attempt.... you all need to appreciate his bravery here.]

[he can't exactly do anything but let Franziska rest, because dead women are even grosser than live women]

But there's no blood trail, or anything. It looks more like someone wildly hitting her, over and over again... like they were trying to bludgeon her to death. I can't think of another reason.