I rarely for example access Shadowheart's "guidance" (unless she is performing the task or interaction herself) saving it for occasions where she would potentially have strong motivation to use it.
That's a good one. It makes me think of something else. I won't let Shadowheart use any amulet with another god's name on it.
Like the Amulet of Silvanus or the Amulet of Selune's Chosen.