I enjoyed your story, it took me on a roller-coaster ride from the first paragraph where I decided I needed to know why an obvious dweller in current times would think a. Hand scribed and illustrated book written on vellum would have been hidden in an attic for centuries. I got no sense of place from the text and, being American, assumed the US. In England or Europe it would be possible.
My next thoughts were, “Wow, a redo of Wilde’s, A Picture Of Dorian Grey, then that it had been inverted and the picture stayed young while the artist aged. I had a bit of logical problem with him discovering the grey in his comb even though he obviously used a mirror. I vividly remember my first greys at 28 while combing my hair, I used a mirror too.
My thoughts at the end were they’d find a mistake in how he’d used the incantations, but your twist to the sisters caught me completely off guard. I loved that, it brought the tale to life in my mind. It brightened the story into a new thing for me, not just a retelling with a simple twist, but a whole new telling of the tale.
Thank you for sharing that with us.
Stay safe and enjoy life, it’s still a great place to hang out.