As I understood it, the way it worked was Astarotte couldn't cherry-pick who to dismiss the Enthrall on. She couldn't just stop the Enthrall from affect the serpent wenches and staying on everyone else. In order to stop it from affecting anyone she would have to consciously end the spell entirely.<br/><br/>However, I also remember the GM determining that the Enthrall effect lasted for 1d3 rounds after ending the spell, so Lustiel smacked someone before the effect dissipated and caused the hostile attitude, even though Astarotte had already dismissed the spell.