I just said it fits well, seems likely in that she was young and in his circle, lived and traveled with him, and he never sought the companionship of any other female, and TJ’s sister got along with her. And there are more than a few indications in the papers from that era... including accusations from his enemies.
As far as I know nobody has a video.
And he went far out of his way to convince her to return to Monticello with him from Paris complete with a promise of “extraordinary privileges”.
It would be much more strange if he had no interest in her. It’s not like he was a maniac running into the fields and grabbing some illiterate slave right off the boat. She was a quarter black, likely the half sister of his deceased wife.
very natural that they should take up together.
There’s a lot about the culture of those times, and of Thomas Jefferson’s temperament, that I don’t think you know or are considering.
Political enemies in those days are no different from those of today; they will accuse all sorts of things that are not true at all. In some ways, they were even more vicious than ours are today.
Thomas deeply loved and grieved his wife, barely leaving his room for months after her death; and he wasn’t a very hot-blooded man, was actually what we might call today a ‘cold fish’, far more intellectual than passionate. And he despised slavery, and did everything he could to enable slaves to be free - when slaves ran away from Monticello, as soon as he knew they were doing alright on their own, he didn’t do anything to get them back; and he helped to educate Sally’s own brother, made him his chef, and manumitted him.
Learn about his brother, Randolph; and read some of the correspondence between them. You might get a clue.