It really is of no particular importance but I wonder what triggered Lauren to stop being the quasi-dedicated student she was with Robin? Could it have been total intimidation with having a new horse so different from Symphony? She does seem uncomfortable around unfamiliar horses as she showed in the 48 Hours episode.
But clearly something changed her drive after joining Barisone. I can only imagine what accomplishments she would have by now if she’d been as disciplined prior to Barisone and not be so hung up with “the name on the door” being her dedicated instructor. Maybe that “name on the door” crap is also applied to her other choices, like attorneys? A name on a door means just one thing - someone can apply text to a door!