If I get get hit by a skill while drowsy, I shouldn't go to sleep soon after.
I don't know about you, but if I'm getting tentacle slapped, pounded into the air by a robot, get pierced by an arrow, all while drowsy, I'm not going to sleep afterwards.
But in all seriousness, having this change would increase zoe's skill cap in terms of decision making (hit the enemy now, or wait it out and let the enemy sleep for the bonus damage). Plus it allows for better wiggle room for potential buffs if she becomes too weak.