Innovative & even humorous use of RenPy's Back/Foward mechanics. I literally laughed out loud, when NIL locked me in one of the "moments" or mocked me for planning to reset. I enjoy watching the mesmerizing couple-twirling sequences as well.
Usually for RenPy games, when seeking alternate branches & endings, I would fast-forward & never go backwards during subsequent gameplay. Not so for 'Her Tears were My Light' -- I read through every screen (again) & sometimes went backwards to reread the previous screens, even during subsequent rounds.
Thanks for the memorable & poignant game experience !