Re: OOC
So the basic options are now laid out, summarizing them here.
-Do nothing
-Hester destroys the crystal. Whisper lives, and probably kills you, but has to rebuild her scrying focus to make another attempt at returning to the material.
-Have Bristle use the focus, killing Hester but removing the threat
-Have Caleb use the focus, possibly cleansing the bloodline of Whisper's taint, but possibly having unintended consequences
I'm just waiting on either a consensus or someone to jump in with another thought or answer.