Layla lets herself be distracted.
(Her notes are really insightful, actually, though it's clear she only kind of knows what she's looking at with the more mystical aspects. But she didn't just take notes on the Essence, the Exaltation - she took notes on Elathea's expressions, the subtle signals and small give aways of her thoughts, her focus, her moods. Where her gaze went, how her breathing changed. Notes on her 'resting' state before the experiment started. And - while Elathea's withdrawn recently, Layla spent a very long time following her mom around and watching her work. The notes have comparisons to where this is different or similar from Elathea's older mannerisms, and how she used to behave while not using Essence, while drawing on it, and after, once the swirl of it around her faded.)