Not having 75% of every photo set standing bolt upright legs firmly clamped together. Every set not having the same poses over and over and over again.
Ad-hoc sets where she actually looks happy, sexual, interested.
Video's that don't do the exact same routine every single time. Same thing again over and over again. No original posing now for a good year.
Other people have also given examples, she is clearly bored of it all at this stage. If you find her sets original and sexy then great for you!
However if Meg offered people the chance to be her friend for half the day if they buy her a new car... you seem the type of guy who would actually do it.