I had the polar opposite reaction, which was embarrassment and inability to keep my eyes on the screen for the love of decency. It was sorta the same reaction I have to hardcore pornography when I’m in the mood for a peck on the cheek. She belongs in the overacting hall of fame.
Interesting how you had a different take.
I thought for what Fantine suffered, she responded quite appropriately, given the lyric she was tasked to deliver.