After googling I found she copied and pasted that quote originally written by a BDSM author called Alexis Hall.
https://www.goodreads.com/quotes/7894412-i-had-no-idea-it-would-be-like-this-that
My female sub girl needs to get fit and get strong muscular legs and bigger and more toned biceps. If anyone have some ideas, please post them here.
Thank you.