were you not paying attention when I explained it five times?

Lisa has control over Creatures of Darkness. Not direct control, but emotional control. When she puts the power behind her voice, she can cause immense fear to those who's powers fall under the purview of darkness (This does not apply to people who use shadow magic, only those with innate abilities). Most of the time, this should cause them to want to follow what she says, or at least not upset her. It does not override powers that give direct control, and can be overcome by willpower.